    {-# LANGUAGE TypeApplications #-}

    -- | Copyright  : Will Thompson, Iñaki García Etxebarria and Jonas Platte
    -- License    : LGPL-2.1
    -- Maintainer : Iñaki García Etxebarria
    --
    -- @GDateTime@ is an opaque structure whose members
    -- cannot be accessed directly.
    --
    -- /Since: 2.26/

    #if !defined(__HADDOCK_VERSION__)
    #define ENABLE_OVERLOADING
    #endif

    module GI.GLib.Structs.DateTime
        (

    -- * Exported types
        DateTime(..)                            ,

     -- * Methods
    -- ** Overloaded methods #method:Overloaded methods#

    #if defined(ENABLE_OVERLOADING)
        ResolveDateTimeMethod                   ,
    #endif

    -- ** add #method:add#

    #if defined(ENABLE_OVERLOADING)
        DateTimeAddMethodInfo                   ,
    #endif
        dateTimeAdd                             ,

    -- ** addDays #method:addDays#

    #if defined(ENABLE_OVERLOADING)
        DateTimeAddDaysMethodInfo               ,
    #endif
        dateTimeAddDays                         ,

    -- ** addFull #method:addFull#

    #if defined(ENABLE_OVERLOADING)
        DateTimeAddFullMethodInfo               ,
    #endif
        dateTimeAddFull                         ,

    -- ** addHours #method:addHours#

    #if defined(ENABLE_OVERLOADING)
        DateTimeAddHoursMethodInfo              ,
    #endif
        dateTimeAddHours                        ,

    -- ** addMinutes #method:addMinutes#

    #if defined(ENABLE_OVERLOADING)
        DateTimeAddMinutesMethodInfo            ,
    #endif
        dateTimeAddMinutes                      ,

    -- ** addMonths #method:addMonths#

    #if defined(ENABLE_OVERLOADING)
        DateTimeAddMonthsMethodInfo             ,
    #endif
        dateTimeAddMonths                       ,

    -- ** addSeconds #method:addSeconds#

    #if defined(ENABLE_OVERLOADING)
        DateTimeAddSecondsMethodInfo            ,
    #endif
        dateTimeAddSeconds                      ,

    -- ** addWeeks #method:addWeeks#

    #if defined(ENABLE_OVERLOADING)
        DateTimeAddWeeksMethodInfo              ,
    #endif
        dateTimeAddWeeks                        ,

    -- ** addYears #method:addYears#

    #if defined(ENABLE_OVERLOADING)
        DateTimeAddYearsMethodInfo              ,
    #endif
        dateTimeAddYears                        ,

    -- ** compare #method:compare#

        dateTimeCompare                         ,

    -- ** difference #method:difference#

    #if defined(ENABLE_OVERLOADING)
        DateTimeDifferenceMethodInfo            ,
    #endif
        dateTimeDifference                      ,

    -- ** equal #method:equal#

        dateTimeEqual                           ,

    -- ** format #method:format#

    #if defined(ENABLE_OVERLOADING)
        DateTimeFormatMethodInfo                ,
    #endif
        dateTimeFormat                          ,

    -- ** formatIso8601 #method:formatIso8601#

    #if defined(ENABLE_OVERLOADING)
        DateTimeFormatIso8601MethodInfo         ,
    #endif
        dateTimeFormatIso8601                   ,

    -- ** getDayOfMonth #method:getDayOfMonth#

    #if defined(ENABLE_OVERLOADING)
        DateTimeGetDayOfMonthMethodInfo         ,
    #endif
        dateTimeGetDayOfMonth                   ,

    -- ** getDayOfWeek #method:getDayOfWeek#

    #if defined(ENABLE_OVERLOADING)
        DateTimeGetDayOfWeekMethodInfo          ,
    #endif
        dateTimeGetDayOfWeek                    ,

    -- ** getDayOfYear #method:getDayOfYear#

    #if defined(ENABLE_OVERLOADING)
        DateTimeGetDayOfYearMethodInfo          ,
    #endif
        dateTimeGetDayOfYear                    ,

    -- ** getHour #method:getHour#

    #if defined(ENABLE_OVERLOADING)
        DateTimeGetHourMethodInfo               ,
    #endif
        dateTimeGetHour                         ,

    -- ** getMicrosecond #method:getMicrosecond#

    #if defined(ENABLE_OVERLOADING)
        DateTimeGetMicrosecondMethodInfo        ,
    #endif
        dateTimeGetMicrosecond                  ,

    -- ** getMinute #method:getMinute#

    #if defined(ENABLE_OVERLOADING)
        DateTimeGetMinuteMethodInfo             ,
    #endif
        dateTimeGetMinute                       ,

    -- ** getMonth #method:getMonth#

    #if defined(ENABLE_OVERLOADING)
        DateTimeGetMonthMethodInfo              ,
    #endif
        dateTimeGetMonth                        ,

    -- ** getSecond #method:getSecond#

    #if defined(ENABLE_OVERLOADING)
        DateTimeGetSecondMethodInfo             ,
    #endif
        dateTimeGetSecond                       ,

    -- ** getSeconds #method:getSeconds#

    #if defined(ENABLE_OVERLOADING)
        DateTimeGetSecondsMethodInfo            ,
    #endif
        dateTimeGetSeconds                      ,

    -- ** getTimezone #method:getTimezone#

    #if defined(ENABLE_OVERLOADING)
        DateTimeGetTimezoneMethodInfo           ,
    #endif
        dateTimeGetTimezone                     ,

    -- ** getTimezoneAbbreviation #method:getTimezoneAbbreviation#

    #if defined(ENABLE_OVERLOADING)
        DateTimeGetTimezoneAbbreviationMethodInfo,
    #endif
        dateTimeGetTimezoneAbbreviation         ,

    -- ** getUtcOffset #method:getUtcOffset#

    #if defined(ENABLE_OVERLOADING)
        DateTimeGetUtcOffsetMethodInfo          ,
    #endif
        dateTimeGetUtcOffset                    ,

    -- ** getWeekNumberingYear #method:getWeekNumberingYear#

    #if defined(ENABLE_OVERLOADING)
        DateTimeGetWeekNumberingYearMethodInfo  ,
    #endif
        dateTimeGetWeekNumberingYear            ,

    -- ** getWeekOfYear #method:getWeekOfYear#

    #if defined(ENABLE_OVERLOADING)
        DateTimeGetWeekOfYearMethodInfo         ,
    #endif
        dateTimeGetWeekOfYear                   ,

    -- ** getYear #method:getYear#

    #if defined(ENABLE_OVERLOADING)
        DateTimeGetYearMethodInfo               ,
    #endif
        dateTimeGetYear                         ,

    -- ** getYmd #method:getYmd#

    #if defined(ENABLE_OVERLOADING)
        DateTimeGetYmdMethodInfo                ,
    #endif
        dateTimeGetYmd                          ,

    -- ** hash #method:hash#

        dateTimeHash                            ,

    -- ** isDaylightSavings #method:isDaylightSavings#

    #if defined(ENABLE_OVERLOADING)
        DateTimeIsDaylightSavingsMethodInfo     ,
    #endif
        dateTimeIsDaylightSavings               ,

    -- ** new #method:new#

        dateTimeNew                             ,

    -- ** newFromIso8601 #method:newFromIso8601#

        dateTimeNewFromIso8601                  ,

    -- ** newFromTimevalLocal #method:newFromTimevalLocal#

        dateTimeNewFromTimevalLocal             ,

    -- ** newFromTimevalUtc #method:newFromTimevalUtc#

        dateTimeNewFromTimevalUtc               ,

    -- ** newFromUnixLocal #method:newFromUnixLocal#

        dateTimeNewFromUnixLocal                ,

    -- ** newFromUnixUtc #method:newFromUnixUtc#

        dateTimeNewFromUnixUtc                  ,

    -- ** newLocal #method:newLocal#

        dateTimeNewLocal                        ,

    -- ** newNow #method:newNow#

        dateTimeNewNow                          ,

    -- ** newNowLocal #method:newNowLocal#

        dateTimeNewNowLocal                     ,

    -- ** newNowUtc #method:newNowUtc#

        dateTimeNewNowUtc                       ,

    -- ** newUtc #method:newUtc#

        dateTimeNewUtc                          ,

    -- ** ref #method:ref#

    #if defined(ENABLE_OVERLOADING)
        DateTimeRefMethodInfo                   ,
    #endif
        dateTimeRef                             ,

    -- ** toLocal #method:toLocal#

    #if defined(ENABLE_OVERLOADING)
        DateTimeToLocalMethodInfo               ,
    #endif
        dateTimeToLocal                         ,

    -- ** toTimeval #method:toTimeval#

    #if defined(ENABLE_OVERLOADING)
        DateTimeToTimevalMethodInfo             ,
    #endif
        dateTimeToTimeval                       ,

    -- ** toTimezone #method:toTimezone#

    #if defined(ENABLE_OVERLOADING)
        DateTimeToTimezoneMethodInfo            ,
    #endif
        dateTimeToTimezone                      ,

    -- ** toUnix #method:toUnix#

    #if defined(ENABLE_OVERLOADING)
        DateTimeToUnixMethodInfo                ,
    #endif
        dateTimeToUnix                          ,

    -- ** toUtc #method:toUtc#

    #if defined(ENABLE_OVERLOADING)
        DateTimeToUtcMethodInfo                 ,
    #endif
        dateTimeToUtc                           ,

    -- ** unref #method:unref#

    #if defined(ENABLE_OVERLOADING)
        DateTimeUnrefMethodInfo                 ,
    #endif
        dateTimeUnref                           ,

        ) where

    import Data.GI.Base.ShortPrelude
    import qualified Data.GI.Base.ShortPrelude as SP
    import qualified Data.GI.Base.Overloading as O
    import qualified Prelude as P

    import qualified Data.GI.Base.Attributes as GI.Attributes
    import qualified Data.GI.Base.BasicTypes as B.Types
    import qualified Data.GI.Base.ManagedPtr as B.ManagedPtr
    import qualified Data.GI.Base.GArray as B.GArray
    import qualified Data.GI.Base.GClosure as B.GClosure
    import qualified Data.GI.Base.GError as B.GError
    import qualified Data.GI.Base.GVariant as B.GVariant
    import qualified Data.GI.Base.GValue as B.GValue
    import qualified Data.GI.Base.GParamSpec as B.GParamSpec
    import qualified Data.GI.Base.CallStack as B.CallStack
    import qualified Data.GI.Base.Properties as B.Properties
    import qualified Data.GI.Base.Signals as B.Signals
    import qualified Control.Monad.IO.Class as MIO
    import qualified Data.Text as T
    import qualified Data.ByteString.Char8 as B
    import qualified Data.Map as Map
    import qualified Foreign.Ptr as FP
    import qualified GHC.OverloadedLabels as OL

    import {-# SOURCE #-} qualified GI.GLib.Structs.TimeVal as GLib.TimeVal
    import {-# SOURCE #-} qualified GI.GLib.Structs.TimeZone as GLib.TimeZone

    -- | Memory-managed wrapper type.
    newtype DateTime = DateTime (SP.ManagedPtr DateTime)
        deriving (DateTime -> DateTime -> Bool
    (DateTime -> DateTime -> Bool)
    -> (DateTime -> DateTime -> Bool) -> Eq DateTime
    forall a. (a -> a -> Bool) -> (a -> a -> Bool) -> Eq a
    /= :: DateTime -> DateTime -> Bool
    $c/= :: DateTime -> DateTime -> Bool
    == :: DateTime -> DateTime -> Bool
    $c== :: DateTime -> DateTime -> Bool
    Eq)

    instance SP.ManagedPtrNewtype DateTime where
        toManagedPtr :: DateTime -> ManagedPtr DateTime
    toManagedPtr (DateTime p :: ManagedPtr DateTime
    p) = ManagedPtr DateTime
    p

    foreign import ccall "g_date_time_get_type" c_g_date_time_get_type ::
        IO GType

    type instance O.ParentTypes DateTime = '[]
    instance O.HasParentTypes DateTime

    instance B.Types.TypedObject DateTime where
        glibType :: IO GType
    glibType = IO GType
    c_g_date_time_get_type

    instance B.Types.GBoxed DateTime

    -- | Convert 'DateTime' to and from 'Data.GI.Base.GValue.GValue' with 'Data.GI.Base.GValue.toGValue' and 'Data.GI.Base.GValue.fromGValue'.
    instance B.GValue.IsGValue DateTime where
        toGValue :: DateTime -> IO GValue
    toGValue o :: DateTime
    o = do
            GType
    gtype <- IO GType
    c_g_date_time_get_type
            DateTime -> (Ptr DateTime -> IO GValue) -> IO GValue
    forall a c.
    (HasCallStack, ManagedPtrNewtype a) =>
    a -> (Ptr a -> IO c) -> IO c
    B.ManagedPtr.withManagedPtr DateTime
    o (GType
    -> (GValue -> Ptr DateTime -> IO ()) -> Ptr DateTime -> IO GValue
    forall a. GType -> (GValue -> a -> IO ()) -> a -> IO GValue
    B.GValue.buildGValue GType
    gtype GValue -> Ptr DateTime -> IO ()
    forall a. GValue -> Ptr a -> IO ()
    B.GValue.set_boxed)

        fromGValue :: GValue -> IO DateTime
    fromGValue gv :: GValue
    gv = do
            Ptr DateTime
    ptr <- GValue -> IO (Ptr DateTime)
    forall b. GValue -> IO (Ptr b)
    B.GValue.get_boxed GValue
    gv :: IO (Ptr DateTime)
            (ManagedPtr DateTime -> DateTime) -> Ptr DateTime -> IO DateTime
    forall a.
    (HasCallStack, GBoxed a) =>
    (ManagedPtr a -> a) -> Ptr a -> IO a
    B.ManagedPtr.newBoxed ManagedPtr DateTime -> DateTime
    DateTime Ptr DateTime
    ptr

    #if defined(ENABLE_OVERLOADING)
    instance O.HasAttributeList DateTime
    type instance O.AttributeList DateTime = DateTimeAttributeList
    type DateTimeAttributeList = ('[ ] :: [(Symbol, *)])
    #endif

    -- method DateTime::new
    -- method type : Constructor
    -- Args: [ Arg
    --           { argCName = "tz"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "TimeZone" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GTimeZone" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       , Arg
    --           { argCName = "year"
    --           , argType = TBasicType TInt
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "the year component of the date"
    --                 , sinceVersion = Nothing
    --                 }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       , Arg
    --           { argCName = "month"
    --           , argType = TBasicType TInt
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "the month component of the date"
    --                 , sinceVersion = Nothing
    --                 }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       , Arg
    --           { argCName = "day"
    --           , argType = TBasicType TInt
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "the day component of the date"
    --                 , sinceVersion = Nothing
    --                 }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       , Arg
    --           { argCName = "hour"
    --           , argType = TBasicType TInt
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "the hour component of the date"
    --                 , sinceVersion = Nothing
    --                 }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       , Arg
    --           { argCName = "minute"
    --           , argType = TBasicType TInt
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "the minute component of the date"
    --                 , sinceVersion = Nothing
    --                 }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       , Arg
    --           { argCName = "seconds"
    --           , argType = TBasicType TDouble
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "the number of seconds past the minute"
    --                 , sinceVersion = Nothing
    --                 }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TInterface Name { namespace = "GLib" , name = "DateTime" })
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_new" g_date_time_new ::
        Ptr GLib.TimeZone.TimeZone ->           -- tz : TInterface (Name {namespace = "GLib", name = "TimeZone"})
        Int32 ->                                -- year : TBasicType TInt
        Int32 ->                                -- month : TBasicType TInt
        Int32 ->                                -- day : TBasicType TInt
        Int32 ->                                -- hour : TBasicType TInt
        Int32 ->                                -- minute : TBasicType TInt
        CDouble ->                              -- seconds : TBasicType TDouble
        IO (Ptr DateTime)

    -- | Creates a new t'GI.GLib.Structs.DateTime.DateTime' corresponding to the given date and time in
    -- the time zone /@tz@/.
    --
    -- The /@year@/ must be between 1 and 9999, /@month@/ between 1 and 12 and /@day@/
    -- between 1 and 28, 29, 30 or 31 depending on the month and the year.
    --
    -- /@hour@/ must be between 0 and 23 and /@minute@/ must be between 0 and 59.
    --
    -- /@seconds@/ must be at least 0.0 and must be strictly less than 60.0.
    -- It will be rounded down to the nearest microsecond.
    --
    -- If the given time is not representable in the given time zone (for
    -- example, 02:30 on March 14th 2010 in Toronto, due to daylight savings
    -- time) then the time will be rounded up to the nearest existing time
    -- (in this case, 03:00).  If this matters to you then you should verify
    -- the return value for containing the same as the numbers you gave.
    --
    -- In the case that the given time is ambiguous in the given time zone
    -- (for example, 01:30 on November 7th 2010 in Toronto, due to daylight
    -- savings time) then the time falling within standard (ie:
    -- non-daylight) time is taken.
    --
    -- It not considered a programmer error for the values to this function
    -- to be out of range, but in the case that they are, the function will
    -- return 'P.Nothing'.
    --
    -- You should release the return value by calling 'GI.GLib.Structs.DateTime.dateTimeUnref'
    -- when you are done with it.
    --
    -- /Since: 2.26/
    dateTimeNew ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        GLib.TimeZone.TimeZone
        -- ^ /@tz@/: a t'GI.GLib.Structs.TimeZone.TimeZone'
        -> Int32
        -- ^ /@year@/: the year component of the date
        -> Int32
        -- ^ /@month@/: the month component of the date
        -> Int32
        -- ^ /@day@/: the day component of the date
        -> Int32
        -- ^ /@hour@/: the hour component of the date
        -> Int32
        -- ^ /@minute@/: the minute component of the date
        -> Double
        -- ^ /@seconds@/: the number of seconds past the minute
        -> m (Maybe DateTime)
        -- ^ __Returns:__ a new t'GI.GLib.Structs.DateTime.DateTime', or 'P.Nothing'
    dateTimeNew :: TimeZone
    -> Int32
    -> Int32
    -> Int32
    -> Int32
    -> Int32
    -> Double
    -> m (Maybe DateTime)
    dateTimeNew tz :: TimeZone
    tz year :: Int32
    year month :: Int32
    month day :: Int32
    day hour :: Int32
    hour minute :: Int32
    minute seconds :: Double
    seconds = IO (Maybe DateTime) -> m (Maybe DateTime)
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO (Maybe DateTime) -> m (Maybe DateTime))
    -> IO (Maybe DateTime) -> m (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr TimeZone
    tz' <- TimeZone -> IO (Ptr TimeZone)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr TimeZone
    tz
        let seconds' :: CDouble
    seconds' = Double -> CDouble
    forall a b. (Real a, Fractional b) => a -> b
    realToFrac Double
    seconds
        Ptr DateTime
    result <- Ptr TimeZone
    -> Int32
    -> Int32
    -> Int32
    -> Int32
    -> Int32
    -> CDouble
    -> IO (Ptr DateTime)
    g_date_time_new Ptr TimeZone
    tz' Int32
    year Int32
    month Int32
    day Int32
    hour Int32
    minute CDouble
    seconds'
        Maybe DateTime
    maybeResult <- Ptr DateTime
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. Ptr a -> (Ptr a -> IO b) -> IO (Maybe b)
    convertIfNonNull Ptr DateTime
    result ((Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime))
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ \result' :: Ptr DateTime
    result' -> do
            DateTime
    result'' <- ((ManagedPtr DateTime -> DateTime) -> Ptr DateTime -> IO DateTime
    forall a.
    (HasCallStack, GBoxed a) =>
    (ManagedPtr a -> a) -> Ptr a -> IO a
    wrapBoxed ManagedPtr DateTime -> DateTime
    DateTime) Ptr DateTime
    result'
            DateTime -> IO DateTime
    forall (m :: * -> *) a. Monad m => a -> m a
    return DateTime
    result''
        TimeZone -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr TimeZone
    tz
        Maybe DateTime -> IO (Maybe DateTime)
    forall (m :: * -> *) a. Monad m => a -> m a
    return Maybe DateTime
    maybeResult

    #if defined(ENABLE_OVERLOADING)
    #endif

    -- method DateTime::new_from_iso8601
    -- method type : Constructor
    -- Args: [ Arg
    --           { argCName = "text"
    --           , argType = TBasicType TUTF8
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "an ISO 8601 formatted time string."
    --                 , sinceVersion = Nothing
    --                 }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       , Arg
    --           { argCName = "default_tz"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "TimeZone" }
    --           , direction = DirectionIn
    --           , mayBeNull = True
    --           , argDoc =
    --               Documentation
    --                 { rawDocText =
    --                     Just
    --                       "a #GTimeZone to use if the text doesn't contain a\n                         timezone, or %NULL."
    --                 , sinceVersion = Nothing
    --                 }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TInterface Name { namespace = "GLib" , name = "DateTime" })
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_new_from_iso8601" g_date_time_new_from_iso8601 ::
        CString ->                              -- text : TBasicType TUTF8
        Ptr GLib.TimeZone.TimeZone ->           -- default_tz : TInterface (Name {namespace = "GLib", name = "TimeZone"})
        IO (Ptr DateTime)

    -- | Creates a t'GI.GLib.Structs.DateTime.DateTime' corresponding to the given
    -- <https://en.wikipedia.org/wiki/ISO_8601 ISO 8601 formatted string>
    -- /@text@/. ISO 8601 strings of the form \<date>\<sep>\<time>\<tz> are supported, with
    -- some extensions from <https://tools.ietf.org/html/rfc3339 RFC 3339> as
    -- mentioned below.
    --
    -- Note that as t'GI.GLib.Structs.DateTime.DateTime' \"is oblivious to leap seconds\", leap seconds information
    -- in an ISO-8601 string will be ignored, so a @23:59:60@ time would be parsed as
    -- @23:59:59@.
    --
    -- \<sep> is the separator and can be either \'T\', \'t\' or \' \'. The latter two
    -- separators are an extension from
    -- <https://tools.ietf.org/html/rfc3339#section-5.6 RFC 3339>.
    --
    -- \<date> is in the form:
    --
    -- * @YYYY-MM-DD@ - Year\/month\/day, e.g. 2016-08-24.
    -- * @YYYYMMDD@ - Same as above without dividers.
    -- * @YYYY-DDD@ - Ordinal day where DDD is from 001 to 366, e.g. 2016-237.
    -- * @YYYYDDD@ - Same as above without dividers.
    -- * @YYYY-Www-D@ - Week day where ww is from 01 to 52 and D from 1-7,
    -- e.g. 2016-W34-3.
    -- * @YYYYWwwD@ - Same as above without dividers.
    --
    --
    -- \<time> is in the form:
    --
    -- * @hh:mm:ss(.sss)@ - Hours, minutes, seconds (subseconds), e.g. 22:10:42.123.
    -- * @hhmmss(.sss)@ - Same as above without dividers.
    --
    --
    -- \<tz> is an optional timezone suffix of the form:
    --
    -- * @Z@ - UTC.
    -- * @+hh:mm@ or @-hh:mm@ - Offset from UTC in hours and minutes, e.g. +12:00.
    -- * @+hh@ or @-hh@ - Offset from UTC in hours, e.g. +12.
    --
    --
    -- If the timezone is not provided in /@text@/ it must be provided in /@defaultTz@/
    -- (this field is otherwise ignored).
    --
    -- This call can fail (returning 'P.Nothing') if /@text@/ is not a valid ISO 8601
    -- formatted string.
    --
    -- You should release the return value by calling 'GI.GLib.Structs.DateTime.dateTimeUnref'
    -- when you are done with it.
    --
    -- /Since: 2.56/
    dateTimeNewFromIso8601 ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        T.Text
        -- ^ /@text@/: an ISO 8601 formatted time string.
        -> Maybe (GLib.TimeZone.TimeZone)
        -- ^ /@defaultTz@/: a t'GI.GLib.Structs.TimeZone.TimeZone' to use if the text doesn\'t contain a
        --                          timezone, or 'P.Nothing'.
        -> m (Maybe DateTime)
        -- ^ __Returns:__ a new t'GI.GLib.Structs.DateTime.DateTime', or 'P.Nothing'
    dateTimeNewFromIso8601 :: Text -> Maybe TimeZone -> m (Maybe DateTime)
    dateTimeNewFromIso8601 text :: Text
    text defaultTz :: Maybe TimeZone
    defaultTz = IO (Maybe DateTime) -> m (Maybe DateTime)
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO (Maybe DateTime) -> m (Maybe DateTime))
    -> IO (Maybe DateTime) -> m (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ do
        CString
    text' <- Text -> IO CString
    textToCString Text
    text
        Ptr TimeZone
    maybeDefaultTz <- case Maybe TimeZone
    defaultTz of
            Nothing -> Ptr TimeZone -> IO (Ptr TimeZone)
    forall (m :: * -> *) a. Monad m => a -> m a
    return Ptr TimeZone
    forall a. Ptr a
    nullPtr
            Just jDefaultTz :: TimeZone
    jDefaultTz -> do
                Ptr TimeZone
    jDefaultTz' <- TimeZone -> IO (Ptr TimeZone)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr TimeZone
    jDefaultTz
                Ptr TimeZone -> IO (Ptr TimeZone)
    forall (m :: * -> *) a. Monad m => a -> m a
    return Ptr TimeZone
    jDefaultTz'
        Ptr DateTime
    result <- CString -> Ptr TimeZone -> IO (Ptr DateTime)
    g_date_time_new_from_iso8601 CString
    text' Ptr TimeZone
    maybeDefaultTz
        Maybe DateTime
    maybeResult <- Ptr DateTime
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. Ptr a -> (Ptr a -> IO b) -> IO (Maybe b)
    convertIfNonNull Ptr DateTime
    result ((Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime))
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ \result' :: Ptr DateTime
    result' -> do
            DateTime
    result'' <- ((ManagedPtr DateTime -> DateTime) -> Ptr DateTime -> IO DateTime
    forall a.
    (HasCallStack, GBoxed a) =>
    (ManagedPtr a -> a) -> Ptr a -> IO a
    wrapBoxed ManagedPtr DateTime -> DateTime
    DateTime) Ptr DateTime
    result'
            DateTime -> IO DateTime
    forall (m :: * -> *) a. Monad m => a -> m a
    return DateTime
    result''
        Maybe TimeZone -> (TimeZone -> IO ()) -> IO ()
    forall (m :: * -> *) a. Monad m => Maybe a -> (a -> m ()) -> m ()
    whenJust Maybe TimeZone
    defaultTz TimeZone -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr
        CString -> IO ()
    forall a. Ptr a -> IO ()
    freeMem CString
    text'
        Maybe DateTime -> IO (Maybe DateTime)
    forall (m :: * -> *) a. Monad m => a -> m a
    return Maybe DateTime
    maybeResult

    #if defined(ENABLE_OVERLOADING)
    #endif

    -- method DateTime::new_from_timeval_local
    -- method type : Constructor
    -- Args: [ Arg
    --           { argCName = "tv"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "TimeVal" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GTimeVal" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TInterface Name { namespace = "GLib" , name = "DateTime" })
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_new_from_timeval_local" g_date_time_new_from_timeval_local ::
        Ptr GLib.TimeVal.TimeVal ->             -- tv : TInterface (Name {namespace = "GLib", name = "TimeVal"})
        IO (Ptr DateTime)

    {-# DEPRECATED dateTimeNewFromTimevalLocal ["(Since version 2.62)","t'GI.GLib.Structs.TimeVal.TimeVal' is not year-2038-safe. Use","   'GI.GLib.Structs.DateTime.dateTimeNewFromUnixLocal' instead."] #-}
    -- | Creates a t'GI.GLib.Structs.DateTime.DateTime' corresponding to the given t'GI.GLib.Structs.TimeVal.TimeVal' /@tv@/ in the
    -- local time zone.
    --
    -- The time contained in a t'GI.GLib.Structs.TimeVal.TimeVal' is always stored in the form of
    -- seconds elapsed since 1970-01-01 00:00:00 UTC, regardless of the
    -- local time offset.
    --
    -- This call can fail (returning 'P.Nothing') if /@tv@/ represents a time outside
    -- of the supported range of t'GI.GLib.Structs.DateTime.DateTime'.
    --
    -- You should release the return value by calling 'GI.GLib.Structs.DateTime.dateTimeUnref'
    -- when you are done with it.
    --
    -- /Since: 2.26/
    dateTimeNewFromTimevalLocal ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        GLib.TimeVal.TimeVal
        -- ^ /@tv@/: a t'GI.GLib.Structs.TimeVal.TimeVal'
        -> m (Maybe DateTime)
        -- ^ __Returns:__ a new t'GI.GLib.Structs.DateTime.DateTime', or 'P.Nothing'
    dateTimeNewFromTimevalLocal :: TimeVal -> m (Maybe DateTime)
    dateTimeNewFromTimevalLocal tv :: TimeVal
    tv = IO (Maybe DateTime) -> m (Maybe DateTime)
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO (Maybe DateTime) -> m (Maybe DateTime))
    -> IO (Maybe DateTime) -> m (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr TimeVal
    tv' <- TimeVal -> IO (Ptr TimeVal)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr TimeVal
    tv
        Ptr DateTime
    result <- Ptr TimeVal -> IO (Ptr DateTime)
    g_date_time_new_from_timeval_local Ptr TimeVal
    tv'
        Maybe DateTime
    maybeResult <- Ptr DateTime
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. Ptr a -> (Ptr a -> IO b) -> IO (Maybe b)
    convertIfNonNull Ptr DateTime
    result ((Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime))
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ \result' :: Ptr DateTime
    result' -> do
            DateTime
    result'' <- ((ManagedPtr DateTime -> DateTime) -> Ptr DateTime -> IO DateTime
    forall a.
    (HasCallStack, GBoxed a) =>
    (ManagedPtr a -> a) -> Ptr a -> IO a
    wrapBoxed ManagedPtr DateTime -> DateTime
    DateTime) Ptr DateTime
    result'
            DateTime -> IO DateTime
    forall (m :: * -> *) a. Monad m => a -> m a
    return DateTime
    result''
        TimeVal -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr TimeVal
    tv
        Maybe DateTime -> IO (Maybe DateTime)
    forall (m :: * -> *) a. Monad m => a -> m a
    return Maybe DateTime
    maybeResult

    #if defined(ENABLE_OVERLOADING)
    #endif

    -- method DateTime::new_from_timeval_utc
    -- method type : Constructor
    -- Args: [ Arg
    --           { argCName = "tv"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "TimeVal" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GTimeVal" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TInterface Name { namespace = "GLib" , name = "DateTime" })
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_new_from_timeval_utc" g_date_time_new_from_timeval_utc ::
        Ptr GLib.TimeVal.TimeVal ->             -- tv : TInterface (Name {namespace = "GLib", name = "TimeVal"})
        IO (Ptr DateTime)

    {-# DEPRECATED dateTimeNewFromTimevalUtc ["(Since version 2.62)","t'GI.GLib.Structs.TimeVal.TimeVal' is not year-2038-safe. Use","   'GI.GLib.Structs.DateTime.dateTimeNewFromUnixUtc' instead."] #-}
    -- | Creates a t'GI.GLib.Structs.DateTime.DateTime' corresponding to the given t'GI.GLib.Structs.TimeVal.TimeVal' /@tv@/ in UTC.
    --
    -- The time contained in a t'GI.GLib.Structs.TimeVal.TimeVal' is always stored in the form of
    -- seconds elapsed since 1970-01-01 00:00:00 UTC.
    --
    -- This call can fail (returning 'P.Nothing') if /@tv@/ represents a time outside
    -- of the supported range of t'GI.GLib.Structs.DateTime.DateTime'.
    --
    -- You should release the return value by calling 'GI.GLib.Structs.DateTime.dateTimeUnref'
    -- when you are done with it.
    --
    -- /Since: 2.26/
    dateTimeNewFromTimevalUtc ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        GLib.TimeVal.TimeVal
        -- ^ /@tv@/: a t'GI.GLib.Structs.TimeVal.TimeVal'
        -> m (Maybe DateTime)
        -- ^ __Returns:__ a new t'GI.GLib.Structs.DateTime.DateTime', or 'P.Nothing'
    dateTimeNewFromTimevalUtc :: TimeVal -> m (Maybe DateTime)
    dateTimeNewFromTimevalUtc tv :: TimeVal
    tv = IO (Maybe DateTime) -> m (Maybe DateTime)
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO (Maybe DateTime) -> m (Maybe DateTime))
    -> IO (Maybe DateTime) -> m (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr TimeVal
    tv' <- TimeVal -> IO (Ptr TimeVal)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr TimeVal
    tv
        Ptr DateTime
    result <- Ptr TimeVal -> IO (Ptr DateTime)
    g_date_time_new_from_timeval_utc Ptr TimeVal
    tv'
        Maybe DateTime
    maybeResult <- Ptr DateTime
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. Ptr a -> (Ptr a -> IO b) -> IO (Maybe b)
    convertIfNonNull Ptr DateTime
    result ((Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime))
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ \result' :: Ptr DateTime
    result' -> do
            DateTime
    result'' <- ((ManagedPtr DateTime -> DateTime) -> Ptr DateTime -> IO DateTime
    forall a.
    (HasCallStack, GBoxed a) =>
    (ManagedPtr a -> a) -> Ptr a -> IO a
    wrapBoxed ManagedPtr DateTime -> DateTime
    DateTime) Ptr DateTime
    result'
            DateTime -> IO DateTime
    forall (m :: * -> *) a. Monad m => a -> m a
    return DateTime
    result''
        TimeVal -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr TimeVal
    tv
        Maybe DateTime -> IO (Maybe DateTime)
    forall (m :: * -> *) a. Monad m => a -> m a
    return Maybe DateTime
    maybeResult

    #if defined(ENABLE_OVERLOADING)
    #endif

    -- method DateTime::new_from_unix_local
    -- method type : Constructor
    -- Args: [ Arg
    --           { argCName = "t"
    --           , argType = TBasicType TInt64
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "the Unix time" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TInterface Name { namespace = "GLib" , name = "DateTime" })
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_new_from_unix_local" g_date_time_new_from_unix_local ::
        Int64 ->                                -- t : TBasicType TInt64
        IO (Ptr DateTime)

    -- | Creates a t'GI.GLib.Structs.DateTime.DateTime' corresponding to the given Unix time /@t@/ in the
    -- local time zone.
    --
    -- Unix time is the number of seconds that have elapsed since 1970-01-01
    -- 00:00:00 UTC, regardless of the local time offset.
    --
    -- This call can fail (returning 'P.Nothing') if /@t@/ represents a time outside
    -- of the supported range of t'GI.GLib.Structs.DateTime.DateTime'.
    --
    -- You should release the return value by calling 'GI.GLib.Structs.DateTime.dateTimeUnref'
    -- when you are done with it.
    --
    -- /Since: 2.26/
    dateTimeNewFromUnixLocal ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        Int64
        -- ^ /@t@/: the Unix time
        -> m (Maybe DateTime)
        -- ^ __Returns:__ a new t'GI.GLib.Structs.DateTime.DateTime', or 'P.Nothing'
    dateTimeNewFromUnixLocal :: Int64 -> m (Maybe DateTime)
    dateTimeNewFromUnixLocal t :: Int64
    t = IO (Maybe DateTime) -> m (Maybe DateTime)
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO (Maybe DateTime) -> m (Maybe DateTime))
    -> IO (Maybe DateTime) -> m (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr DateTime
    result <- Int64 -> IO (Ptr DateTime)
    g_date_time_new_from_unix_local Int64
    t
        Maybe DateTime
    maybeResult <- Ptr DateTime
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. Ptr a -> (Ptr a -> IO b) -> IO (Maybe b)
    convertIfNonNull Ptr DateTime
    result ((Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime))
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ \result' :: Ptr DateTime
    result' -> do
            DateTime
    result'' <- ((ManagedPtr DateTime -> DateTime) -> Ptr DateTime -> IO DateTime
    forall a.
    (HasCallStack, GBoxed a) =>
    (ManagedPtr a -> a) -> Ptr a -> IO a
    wrapBoxed ManagedPtr DateTime -> DateTime
    DateTime) Ptr DateTime
    result'
            DateTime -> IO DateTime
    forall (m :: * -> *) a. Monad m => a -> m a
    return DateTime
    result''
        Maybe DateTime -> IO (Maybe DateTime)
    forall (m :: * -> *) a. Monad m => a -> m a
    return Maybe DateTime
    maybeResult

    #if defined(ENABLE_OVERLOADING)
    #endif

    -- method DateTime::new_from_unix_utc
    -- method type : Constructor
    -- Args: [ Arg
    --           { argCName = "t"
    --           , argType = TBasicType TInt64
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "the Unix time" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TInterface Name { namespace = "GLib" , name = "DateTime" })
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_new_from_unix_utc" g_date_time_new_from_unix_utc ::
        Int64 ->                                -- t : TBasicType TInt64
        IO (Ptr DateTime)

    -- | Creates a t'GI.GLib.Structs.DateTime.DateTime' corresponding to the given Unix time /@t@/ in UTC.
    --
    -- Unix time is the number of seconds that have elapsed since 1970-01-01
    -- 00:00:00 UTC.
    --
    -- This call can fail (returning 'P.Nothing') if /@t@/ represents a time outside
    -- of the supported range of t'GI.GLib.Structs.DateTime.DateTime'.
    --
    -- You should release the return value by calling 'GI.GLib.Structs.DateTime.dateTimeUnref'
    -- when you are done with it.
    --
    -- /Since: 2.26/
    dateTimeNewFromUnixUtc ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        Int64
        -- ^ /@t@/: the Unix time
        -> m (Maybe DateTime)
        -- ^ __Returns:__ a new t'GI.GLib.Structs.DateTime.DateTime', or 'P.Nothing'
    dateTimeNewFromUnixUtc :: Int64 -> m (Maybe DateTime)
    dateTimeNewFromUnixUtc t :: Int64
    t = IO (Maybe DateTime) -> m (Maybe DateTime)
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO (Maybe DateTime) -> m (Maybe DateTime))
    -> IO (Maybe DateTime) -> m (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr DateTime
    result <- Int64 -> IO (Ptr DateTime)
    g_date_time_new_from_unix_utc Int64
    t
        Maybe DateTime
    maybeResult <- Ptr DateTime
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. Ptr a -> (Ptr a -> IO b) -> IO (Maybe b)
    convertIfNonNull Ptr DateTime
    result ((Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime))
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ \result' :: Ptr DateTime
    result' -> do
            DateTime
    result'' <- ((ManagedPtr DateTime -> DateTime) -> Ptr DateTime -> IO DateTime
    forall a.
    (HasCallStack, GBoxed a) =>
    (ManagedPtr a -> a) -> Ptr a -> IO a
    wrapBoxed ManagedPtr DateTime -> DateTime
    DateTime) Ptr DateTime
    result'
            DateTime -> IO DateTime
    forall (m :: * -> *) a. Monad m => a -> m a
    return DateTime
    result''
        Maybe DateTime -> IO (Maybe DateTime)
    forall (m :: * -> *) a. Monad m => a -> m a
    return Maybe DateTime
    maybeResult

    #if defined(ENABLE_OVERLOADING)
    #endif

    -- method DateTime::new_local
    -- method type : Constructor
    -- Args: [ Arg
    --           { argCName = "year"
    --           , argType = TBasicType TInt
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "the year component of the date"
    --                 , sinceVersion = Nothing
    --                 }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       , Arg
    --           { argCName = "month"
    --           , argType = TBasicType TInt
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "the month component of the date"
    --                 , sinceVersion = Nothing
    --                 }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       , Arg
    --           { argCName = "day"
    --           , argType = TBasicType TInt
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "the day component of the date"
    --                 , sinceVersion = Nothing
    --                 }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       , Arg
    --           { argCName = "hour"
    --           , argType = TBasicType TInt
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "the hour component of the date"
    --                 , sinceVersion = Nothing
    --                 }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       , Arg
    --           { argCName = "minute"
    --           , argType = TBasicType TInt
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "the minute component of the date"
    --                 , sinceVersion = Nothing
    --                 }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       , Arg
    --           { argCName = "seconds"
    --           , argType = TBasicType TDouble
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "the number of seconds past the minute"
    --                 , sinceVersion = Nothing
    --                 }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TInterface Name { namespace = "GLib" , name = "DateTime" })
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_new_local" g_date_time_new_local ::
        Int32 ->                                -- year : TBasicType TInt
        Int32 ->                                -- month : TBasicType TInt
        Int32 ->                                -- day : TBasicType TInt
        Int32 ->                                -- hour : TBasicType TInt
        Int32 ->                                -- minute : TBasicType TInt
        CDouble ->                              -- seconds : TBasicType TDouble
        IO (Ptr DateTime)

    -- | Creates a new t'GI.GLib.Structs.DateTime.DateTime' corresponding to the given date and time in
    -- the local time zone.
    --
    -- This call is equivalent to calling 'GI.GLib.Structs.DateTime.dateTimeNew' with the time
    -- zone returned by 'GI.GLib.Structs.TimeZone.timeZoneNewLocal'.
    --
    -- /Since: 2.26/
    dateTimeNewLocal ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        Int32
        -- ^ /@year@/: the year component of the date
        -> Int32
        -- ^ /@month@/: the month component of the date
        -> Int32
        -- ^ /@day@/: the day component of the date
        -> Int32
        -- ^ /@hour@/: the hour component of the date
        -> Int32
        -- ^ /@minute@/: the minute component of the date
        -> Double
        -- ^ /@seconds@/: the number of seconds past the minute
        -> m (Maybe DateTime)
        -- ^ __Returns:__ a t'GI.GLib.Structs.DateTime.DateTime', or 'P.Nothing'
    dateTimeNewLocal :: Int32
    -> Int32 -> Int32 -> Int32 -> Int32 -> Double -> m (Maybe DateTime)
    dateTimeNewLocal year :: Int32
    year month :: Int32
    month day :: Int32
    day hour :: Int32
    hour minute :: Int32
    minute seconds :: Double
    seconds = IO (Maybe DateTime) -> m (Maybe DateTime)
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO (Maybe DateTime) -> m (Maybe DateTime))
    -> IO (Maybe DateTime) -> m (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ do
        let seconds' :: CDouble
    seconds' = Double -> CDouble
    forall a b. (Real a, Fractional b) => a -> b
    realToFrac Double
    seconds
        Ptr DateTime
    result <- Int32
    -> Int32 -> Int32 -> Int32 -> Int32 -> CDouble -> IO (Ptr DateTime)
    g_date_time_new_local Int32
    year Int32
    month Int32
    day Int32
    hour Int32
    minute CDouble
    seconds'
        Maybe DateTime
    maybeResult <- Ptr DateTime
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. Ptr a -> (Ptr a -> IO b) -> IO (Maybe b)
    convertIfNonNull Ptr DateTime
    result ((Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime))
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ \result' :: Ptr DateTime
    result' -> do
            DateTime
    result'' <- ((ManagedPtr DateTime -> DateTime) -> Ptr DateTime -> IO DateTime
    forall a.
    (HasCallStack, GBoxed a) =>
    (ManagedPtr a -> a) -> Ptr a -> IO a
    wrapBoxed ManagedPtr DateTime -> DateTime
    DateTime) Ptr DateTime
    result'
            DateTime -> IO DateTime
    forall (m :: * -> *) a. Monad m => a -> m a
    return DateTime
    result''
        Maybe DateTime -> IO (Maybe DateTime)
    forall (m :: * -> *) a. Monad m => a -> m a
    return Maybe DateTime
    maybeResult

    #if defined(ENABLE_OVERLOADING)
    #endif

    -- method DateTime::new_now
    -- method type : Constructor
    -- Args: [ Arg
    --           { argCName = "tz"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "TimeZone" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GTimeZone" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TInterface Name { namespace = "GLib" , name = "DateTime" })
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_new_now" g_date_time_new_now ::
        Ptr GLib.TimeZone.TimeZone ->           -- tz : TInterface (Name {namespace = "GLib", name = "TimeZone"})
        IO (Ptr DateTime)

    -- | Creates a t'GI.GLib.Structs.DateTime.DateTime' corresponding to this exact instant in the given
    -- time zone /@tz@/.  The time is as accurate as the system allows, to a
    -- maximum accuracy of 1 microsecond.
    --
    -- This function will always succeed unless GLib is still being used after the
    -- year 9999.
    --
    -- You should release the return value by calling 'GI.GLib.Structs.DateTime.dateTimeUnref'
    -- when you are done with it.
    --
    -- /Since: 2.26/
    dateTimeNewNow ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        GLib.TimeZone.TimeZone
        -- ^ /@tz@/: a t'GI.GLib.Structs.TimeZone.TimeZone'
        -> m (Maybe DateTime)
        -- ^ __Returns:__ a new t'GI.GLib.Structs.DateTime.DateTime', or 'P.Nothing'
    dateTimeNewNow :: TimeZone -> m (Maybe DateTime)
    dateTimeNewNow tz :: TimeZone
    tz = IO (Maybe DateTime) -> m (Maybe DateTime)
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO (Maybe DateTime) -> m (Maybe DateTime))
    -> IO (Maybe DateTime) -> m (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr TimeZone
    tz' <- TimeZone -> IO (Ptr TimeZone)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr TimeZone
    tz
        Ptr DateTime
    result <- Ptr TimeZone -> IO (Ptr DateTime)
    g_date_time_new_now Ptr TimeZone
    tz'
        Maybe DateTime
    maybeResult <- Ptr DateTime
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. Ptr a -> (Ptr a -> IO b) -> IO (Maybe b)
    convertIfNonNull Ptr DateTime
    result ((Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime))
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ \result' :: Ptr DateTime
    result' -> do
            DateTime
    result'' <- ((ManagedPtr DateTime -> DateTime) -> Ptr DateTime -> IO DateTime
    forall a.
    (HasCallStack, GBoxed a) =>
    (ManagedPtr a -> a) -> Ptr a -> IO a
    wrapBoxed ManagedPtr DateTime -> DateTime
    DateTime) Ptr DateTime
    result'
            DateTime -> IO DateTime
    forall (m :: * -> *) a. Monad m => a -> m a
    return DateTime
    result''
        TimeZone -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr TimeZone
    tz
        Maybe DateTime -> IO (Maybe DateTime)
    forall (m :: * -> *) a. Monad m => a -> m a
    return Maybe DateTime
    maybeResult

    #if defined(ENABLE_OVERLOADING)
    #endif

    -- method DateTime::new_now_local
    -- method type : Constructor
    -- Args: []
    -- Lengths: []
    -- returnType: Just (TInterface Name { namespace = "GLib" , name = "DateTime" })
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_new_now_local" g_date_time_new_now_local ::
        IO (Ptr DateTime)

    -- | Creates a t'GI.GLib.Structs.DateTime.DateTime' corresponding to this exact instant in the local
    -- time zone.
    --
    -- This is equivalent to calling 'GI.GLib.Structs.DateTime.dateTimeNewNow' with the time
    -- zone returned by 'GI.GLib.Structs.TimeZone.timeZoneNewLocal'.
    --
    -- /Since: 2.26/
    dateTimeNewNowLocal ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        m (Maybe DateTime)
        -- ^ __Returns:__ a new t'GI.GLib.Structs.DateTime.DateTime', or 'P.Nothing'
    dateTimeNewNowLocal :: m (Maybe DateTime)
    dateTimeNewNowLocal  = IO (Maybe DateTime) -> m (Maybe DateTime)
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO (Maybe DateTime) -> m (Maybe DateTime))
    -> IO (Maybe DateTime) -> m (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr DateTime
    result <- IO (Ptr DateTime)
    g_date_time_new_now_local
        Maybe DateTime
    maybeResult <- Ptr DateTime
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. Ptr a -> (Ptr a -> IO b) -> IO (Maybe b)
    convertIfNonNull Ptr DateTime
    result ((Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime))
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ \result' :: Ptr DateTime
    result' -> do
            DateTime
    result'' <- ((ManagedPtr DateTime -> DateTime) -> Ptr DateTime -> IO DateTime
    forall a.
    (HasCallStack, GBoxed a) =>
    (ManagedPtr a -> a) -> Ptr a -> IO a
    wrapBoxed ManagedPtr DateTime -> DateTime
    DateTime) Ptr DateTime
    result'
            DateTime -> IO DateTime
    forall (m :: * -> *) a. Monad m => a -> m a
    return DateTime
    result''
        Maybe DateTime -> IO (Maybe DateTime)
    forall (m :: * -> *) a. Monad m => a -> m a
    return Maybe DateTime
    maybeResult

    #if defined(ENABLE_OVERLOADING)
    #endif

    -- method DateTime::new_now_utc
    -- method type : Constructor
    -- Args: []
    -- Lengths: []
    -- returnType: Just (TInterface Name { namespace = "GLib" , name = "DateTime" })
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_new_now_utc" g_date_time_new_now_utc ::
        IO (Ptr DateTime)

    -- | Creates a t'GI.GLib.Structs.DateTime.DateTime' corresponding to this exact instant in UTC.
    --
    -- This is equivalent to calling 'GI.GLib.Structs.DateTime.dateTimeNewNow' with the time
    -- zone returned by 'GI.GLib.Structs.TimeZone.timeZoneNewUtc'.
    --
    -- /Since: 2.26/
    dateTimeNewNowUtc ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        m (Maybe DateTime)
        -- ^ __Returns:__ a new t'GI.GLib.Structs.DateTime.DateTime', or 'P.Nothing'
    dateTimeNewNowUtc :: m (Maybe DateTime)
    dateTimeNewNowUtc  = IO (Maybe DateTime) -> m (Maybe DateTime)
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO (Maybe DateTime) -> m (Maybe DateTime))
    -> IO (Maybe DateTime) -> m (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr DateTime
    result <- IO (Ptr DateTime)
    g_date_time_new_now_utc
        Maybe DateTime
    maybeResult <- Ptr DateTime
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. Ptr a -> (Ptr a -> IO b) -> IO (Maybe b)
    convertIfNonNull Ptr DateTime
    result ((Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime))
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ \result' :: Ptr DateTime
    result' -> do
            DateTime
    result'' <- ((ManagedPtr DateTime -> DateTime) -> Ptr DateTime -> IO DateTime
    forall a.
    (HasCallStack, GBoxed a) =>
    (ManagedPtr a -> a) -> Ptr a -> IO a
    wrapBoxed ManagedPtr DateTime -> DateTime
    DateTime) Ptr DateTime
    result'
            DateTime -> IO DateTime
    forall (m :: * -> *) a. Monad m => a -> m a
    return DateTime
    result''
        Maybe DateTime -> IO (Maybe DateTime)
    forall (m :: * -> *) a. Monad m => a -> m a
    return Maybe DateTime
    maybeResult

    #if defined(ENABLE_OVERLOADING)
    #endif

    -- method DateTime::new_utc
    -- method type : Constructor
    -- Args: [ Arg
    --           { argCName = "year"
    --           , argType = TBasicType TInt
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "the year component of the date"
    --                 , sinceVersion = Nothing
    --                 }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       , Arg
    --           { argCName = "month"
    --           , argType = TBasicType TInt
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "the month component of the date"
    --                 , sinceVersion = Nothing
    --                 }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       , Arg
    --           { argCName = "day"
    --           , argType = TBasicType TInt
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "the day component of the date"
    --                 , sinceVersion = Nothing
    --                 }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       , Arg
    --           { argCName = "hour"
    --           , argType = TBasicType TInt
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "the hour component of the date"
    --                 , sinceVersion = Nothing
    --                 }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       , Arg
    --           { argCName = "minute"
    --           , argType = TBasicType TInt
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "the minute component of the date"
    --                 , sinceVersion = Nothing
    --                 }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       , Arg
    --           { argCName = "seconds"
    --           , argType = TBasicType TDouble
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "the number of seconds past the minute"
    --                 , sinceVersion = Nothing
    --                 }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TInterface Name { namespace = "GLib" , name = "DateTime" })
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_new_utc" g_date_time_new_utc ::
        Int32 ->                                -- year : TBasicType TInt
        Int32 ->                                -- month : TBasicType TInt
        Int32 ->                                -- day : TBasicType TInt
        Int32 ->                                -- hour : TBasicType TInt
        Int32 ->                                -- minute : TBasicType TInt
        CDouble ->                              -- seconds : TBasicType TDouble
        IO (Ptr DateTime)

    -- | Creates a new t'GI.GLib.Structs.DateTime.DateTime' corresponding to the given date and time in
    -- UTC.
    --
    -- This call is equivalent to calling 'GI.GLib.Structs.DateTime.dateTimeNew' with the time
    -- zone returned by 'GI.GLib.Structs.TimeZone.timeZoneNewUtc'.
    --
    -- /Since: 2.26/
    dateTimeNewUtc ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        Int32
        -- ^ /@year@/: the year component of the date
        -> Int32
        -- ^ /@month@/: the month component of the date
        -> Int32
        -- ^ /@day@/: the day component of the date
        -> Int32
        -- ^ /@hour@/: the hour component of the date
        -> Int32
        -- ^ /@minute@/: the minute component of the date
        -> Double
        -- ^ /@seconds@/: the number of seconds past the minute
        -> m (Maybe DateTime)
        -- ^ __Returns:__ a t'GI.GLib.Structs.DateTime.DateTime', or 'P.Nothing'
    dateTimeNewUtc :: Int32
    -> Int32 -> Int32 -> Int32 -> Int32 -> Double -> m (Maybe DateTime)
    dateTimeNewUtc year :: Int32
    year month :: Int32
    month day :: Int32
    day hour :: Int32
    hour minute :: Int32
    minute seconds :: Double
    seconds = IO (Maybe DateTime) -> m (Maybe DateTime)
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO (Maybe DateTime) -> m (Maybe DateTime))
    -> IO (Maybe DateTime) -> m (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ do
        let seconds' :: CDouble
    seconds' = Double -> CDouble
    forall a b. (Real a, Fractional b) => a -> b
    realToFrac Double
    seconds
        Ptr DateTime
    result <- Int32
    -> Int32 -> Int32 -> Int32 -> Int32 -> CDouble -> IO (Ptr DateTime)
    g_date_time_new_utc Int32
    year Int32
    month Int32
    day Int32
    hour Int32
    minute CDouble
    seconds'
        Maybe DateTime
    maybeResult <- Ptr DateTime
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. Ptr a -> (Ptr a -> IO b) -> IO (Maybe b)
    convertIfNonNull Ptr DateTime
    result ((Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime))
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ \result' :: Ptr DateTime
    result' -> do
            DateTime
    result'' <- ((ManagedPtr DateTime -> DateTime) -> Ptr DateTime -> IO DateTime
    forall a.
    (HasCallStack, GBoxed a) =>
    (ManagedPtr a -> a) -> Ptr a -> IO a
    wrapBoxed ManagedPtr DateTime -> DateTime
    DateTime) Ptr DateTime
    result'
            DateTime -> IO DateTime
    forall (m :: * -> *) a. Monad m => a -> m a
    return DateTime
    result''
        Maybe DateTime -> IO (Maybe DateTime)
    forall (m :: * -> *) a. Monad m => a -> m a
    return Maybe DateTime
    maybeResult

    #if defined(ENABLE_OVERLOADING)
    #endif

    -- method DateTime::add
    -- method type : OrdinaryMethod
    -- Args: [ Arg
    --           { argCName = "datetime"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "DateTime" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GDateTime" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       , Arg
    --           { argCName = "timespan"
    --           , argType = TBasicType TInt64
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GTimeSpan" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TInterface Name { namespace = "GLib" , name = "DateTime" })
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_add" g_date_time_add ::
        Ptr DateTime ->                         -- datetime : TInterface (Name {namespace = "GLib", name = "DateTime"})
        Int64 ->                                -- timespan : TBasicType TInt64
        IO (Ptr DateTime)

    -- | Creates a copy of /@datetime@/ and adds the specified timespan to the copy.
    --
    -- /Since: 2.26/
    dateTimeAdd ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        DateTime
        -- ^ /@datetime@/: a t'GI.GLib.Structs.DateTime.DateTime'
        -> Int64
        -- ^ /@timespan@/: a @/GTimeSpan/@
        -> m (Maybe DateTime)
        -- ^ __Returns:__ the newly created t'GI.GLib.Structs.DateTime.DateTime' which
        --   should be freed with 'GI.GLib.Structs.DateTime.dateTimeUnref', or 'P.Nothing'
    dateTimeAdd :: DateTime -> Int64 -> m (Maybe DateTime)
    dateTimeAdd datetime :: DateTime
    datetime timespan :: Int64
    timespan = IO (Maybe DateTime) -> m (Maybe DateTime)
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO (Maybe DateTime) -> m (Maybe DateTime))
    -> IO (Maybe DateTime) -> m (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr DateTime
    datetime' <- DateTime -> IO (Ptr DateTime)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr DateTime
    datetime
        Ptr DateTime
    result <- Ptr DateTime -> Int64 -> IO (Ptr DateTime)
    g_date_time_add Ptr DateTime
    datetime' Int64
    timespan
        Maybe DateTime
    maybeResult <- Ptr DateTime
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. Ptr a -> (Ptr a -> IO b) -> IO (Maybe b)
    convertIfNonNull Ptr DateTime
    result ((Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime))
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ \result' :: Ptr DateTime
    result' -> do
            DateTime
    result'' <- ((ManagedPtr DateTime -> DateTime) -> Ptr DateTime -> IO DateTime
    forall a.
    (HasCallStack, GBoxed a) =>
    (ManagedPtr a -> a) -> Ptr a -> IO a
    wrapBoxed ManagedPtr DateTime -> DateTime
    DateTime) Ptr DateTime
    result'
            DateTime -> IO DateTime
    forall (m :: * -> *) a. Monad m => a -> m a
    return DateTime
    result''
        DateTime -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr DateTime
    datetime
        Maybe DateTime -> IO (Maybe DateTime)
    forall (m :: * -> *) a. Monad m => a -> m a
    return Maybe DateTime
    maybeResult

    #if defined(ENABLE_OVERLOADING)
    data DateTimeAddMethodInfo
    instance (signature ~ (Int64 -> m (Maybe DateTime)), MonadIO m) => O.MethodInfo DateTimeAddMethodInfo DateTime signature where
        overloadedMethod = dateTimeAdd

    #endif

    -- method DateTime::add_days
    -- method type : OrdinaryMethod
    -- Args: [ Arg
    --           { argCName = "datetime"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "DateTime" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GDateTime" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       , Arg
    --           { argCName = "days"
    --           , argType = TBasicType TInt
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "the number of days" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TInterface Name { namespace = "GLib" , name = "DateTime" })
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_add_days" g_date_time_add_days ::
        Ptr DateTime ->                         -- datetime : TInterface (Name {namespace = "GLib", name = "DateTime"})
        Int32 ->                                -- days : TBasicType TInt
        IO (Ptr DateTime)

    -- | Creates a copy of /@datetime@/ and adds the specified number of days to the
    -- copy. Add negative values to subtract days.
    --
    -- /Since: 2.26/
    dateTimeAddDays ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        DateTime
        -- ^ /@datetime@/: a t'GI.GLib.Structs.DateTime.DateTime'
        -> Int32
        -- ^ /@days@/: the number of days
        -> m (Maybe DateTime)
        -- ^ __Returns:__ the newly created t'GI.GLib.Structs.DateTime.DateTime' which
        --   should be freed with 'GI.GLib.Structs.DateTime.dateTimeUnref', or 'P.Nothing'
    dateTimeAddDays :: DateTime -> Int32 -> m (Maybe DateTime)
    dateTimeAddDays datetime :: DateTime
    datetime days :: Int32
    days = IO (Maybe DateTime) -> m (Maybe DateTime)
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO (Maybe DateTime) -> m (Maybe DateTime))
    -> IO (Maybe DateTime) -> m (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr DateTime
    datetime' <- DateTime -> IO (Ptr DateTime)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr DateTime
    datetime
        Ptr DateTime
    result <- Ptr DateTime -> Int32 -> IO (Ptr DateTime)
    g_date_time_add_days Ptr DateTime
    datetime' Int32
    days
        Maybe DateTime
    maybeResult <- Ptr DateTime
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. Ptr a -> (Ptr a -> IO b) -> IO (Maybe b)
    convertIfNonNull Ptr DateTime
    result ((Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime))
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ \result' :: Ptr DateTime
    result' -> do
            DateTime
    result'' <- ((ManagedPtr DateTime -> DateTime) -> Ptr DateTime -> IO DateTime
    forall a.
    (HasCallStack, GBoxed a) =>
    (ManagedPtr a -> a) -> Ptr a -> IO a
    wrapBoxed ManagedPtr DateTime -> DateTime
    DateTime) Ptr DateTime
    result'
            DateTime -> IO DateTime
    forall (m :: * -> *) a. Monad m => a -> m a
    return DateTime
    result''
        DateTime -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr DateTime
    datetime
        Maybe DateTime -> IO (Maybe DateTime)
    forall (m :: * -> *) a. Monad m => a -> m a
    return Maybe DateTime
    maybeResult

    #if defined(ENABLE_OVERLOADING)
    data DateTimeAddDaysMethodInfo
    instance (signature ~ (Int32 -> m (Maybe DateTime)), MonadIO m) => O.MethodInfo DateTimeAddDaysMethodInfo DateTime signature where
        overloadedMethod = dateTimeAddDays

    #endif

    -- method DateTime::add_full
    -- method type : OrdinaryMethod
    -- Args: [ Arg
    --           { argCName = "datetime"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "DateTime" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GDateTime" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       , Arg
    --           { argCName = "years"
    --           , argType = TBasicType TInt
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "the number of years to add"
    --                 , sinceVersion = Nothing
    --                 }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       , Arg
    --           { argCName = "months"
    --           , argType = TBasicType TInt
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "the number of months to add"
    --                 , sinceVersion = Nothing
    --                 }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       , Arg
    --           { argCName = "days"
    --           , argType = TBasicType TInt
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "the number of days to add"
    --                 , sinceVersion = Nothing
    --                 }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       , Arg
    --           { argCName = "hours"
    --           , argType = TBasicType TInt
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "the number of hours to add"
    --                 , sinceVersion = Nothing
    --                 }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       , Arg
    --           { argCName = "minutes"
    --           , argType = TBasicType TInt
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "the number of minutes to add"
    --                 , sinceVersion = Nothing
    --                 }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       , Arg
    --           { argCName = "seconds"
    --           , argType = TBasicType TDouble
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "the number of seconds to add"
    --                 , sinceVersion = Nothing
    --                 }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TInterface Name { namespace = "GLib" , name = "DateTime" })
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_add_full" g_date_time_add_full ::
        Ptr DateTime ->                         -- datetime : TInterface (Name {namespace = "GLib", name = "DateTime"})
        Int32 ->                                -- years : TBasicType TInt
        Int32 ->                                -- months : TBasicType TInt
        Int32 ->                                -- days : TBasicType TInt
        Int32 ->                                -- hours : TBasicType TInt
        Int32 ->                                -- minutes : TBasicType TInt
        CDouble ->                              -- seconds : TBasicType TDouble
        IO (Ptr DateTime)

    -- | Creates a new t'GI.GLib.Structs.DateTime.DateTime' adding the specified values to the current date and
    -- time in /@datetime@/. Add negative values to subtract.
    --
    -- /Since: 2.26/
    dateTimeAddFull ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        DateTime
        -- ^ /@datetime@/: a t'GI.GLib.Structs.DateTime.DateTime'
        -> Int32
        -- ^ /@years@/: the number of years to add
        -> Int32
        -- ^ /@months@/: the number of months to add
        -> Int32
        -- ^ /@days@/: the number of days to add
        -> Int32
        -- ^ /@hours@/: the number of hours to add
        -> Int32
        -- ^ /@minutes@/: the number of minutes to add
        -> Double
        -- ^ /@seconds@/: the number of seconds to add
        -> m (Maybe DateTime)
        -- ^ __Returns:__ the newly created t'GI.GLib.Structs.DateTime.DateTime' which
        --   should be freed with 'GI.GLib.Structs.DateTime.dateTimeUnref', or 'P.Nothing'
    dateTimeAddFull :: DateTime
    -> Int32
    -> Int32
    -> Int32
    -> Int32
    -> Int32
    -> Double
    -> m (Maybe DateTime)
    dateTimeAddFull datetime :: DateTime
    datetime years :: Int32
    years months :: Int32
    months days :: Int32
    days hours :: Int32
    hours minutes :: Int32
    minutes seconds :: Double
    seconds = IO (Maybe DateTime) -> m (Maybe DateTime)
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO (Maybe DateTime) -> m (Maybe DateTime))
    -> IO (Maybe DateTime) -> m (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr DateTime
    datetime' <- DateTime -> IO (Ptr DateTime)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr DateTime
    datetime
        let seconds' :: CDouble
    seconds' = Double -> CDouble
    forall a b. (Real a, Fractional b) => a -> b
    realToFrac Double
    seconds
        Ptr DateTime
    result <- Ptr DateTime
    -> Int32
    -> Int32
    -> Int32
    -> Int32
    -> Int32
    -> CDouble
    -> IO (Ptr DateTime)
    g_date_time_add_full Ptr DateTime
    datetime' Int32
    years Int32
    months Int32
    days Int32
    hours Int32
    minutes CDouble
    seconds'
        Maybe DateTime
    maybeResult <- Ptr DateTime
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. Ptr a -> (Ptr a -> IO b) -> IO (Maybe b)
    convertIfNonNull Ptr DateTime
    result ((Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime))
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ \result' :: Ptr DateTime
    result' -> do
            DateTime
    result'' <- ((ManagedPtr DateTime -> DateTime) -> Ptr DateTime -> IO DateTime
    forall a.
    (HasCallStack, GBoxed a) =>
    (ManagedPtr a -> a) -> Ptr a -> IO a
    wrapBoxed ManagedPtr DateTime -> DateTime
    DateTime) Ptr DateTime
    result'
            DateTime -> IO DateTime
    forall (m :: * -> *) a. Monad m => a -> m a
    return DateTime
    result''
        DateTime -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr DateTime
    datetime
        Maybe DateTime -> IO (Maybe DateTime)
    forall (m :: * -> *) a. Monad m => a -> m a
    return Maybe DateTime
    maybeResult

    #if defined(ENABLE_OVERLOADING)
    data DateTimeAddFullMethodInfo
    instance (signature ~ (Int32 -> Int32 -> Int32 -> Int32 -> Int32 -> Double -> m (Maybe DateTime)), MonadIO m) => O.MethodInfo DateTimeAddFullMethodInfo DateTime signature where
        overloadedMethod = dateTimeAddFull

    #endif

    -- method DateTime::add_hours
    -- method type : OrdinaryMethod
    -- Args: [ Arg
    --           { argCName = "datetime"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "DateTime" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GDateTime" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       , Arg
    --           { argCName = "hours"
    --           , argType = TBasicType TInt
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "the number of hours to add"
    --                 , sinceVersion = Nothing
    --                 }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TInterface Name { namespace = "GLib" , name = "DateTime" })
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_add_hours" g_date_time_add_hours ::
        Ptr DateTime ->                         -- datetime : TInterface (Name {namespace = "GLib", name = "DateTime"})
        Int32 ->                                -- hours : TBasicType TInt
        IO (Ptr DateTime)

    -- | Creates a copy of /@datetime@/ and adds the specified number of hours.
    -- Add negative values to subtract hours.
    --
    -- /Since: 2.26/
    dateTimeAddHours ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        DateTime
        -- ^ /@datetime@/: a t'GI.GLib.Structs.DateTime.DateTime'
        -> Int32
        -- ^ /@hours@/: the number of hours to add
        -> m (Maybe DateTime)
        -- ^ __Returns:__ the newly created t'GI.GLib.Structs.DateTime.DateTime' which
        --   should be freed with 'GI.GLib.Structs.DateTime.dateTimeUnref', or 'P.Nothing'
    dateTimeAddHours :: DateTime -> Int32 -> m (Maybe DateTime)
    dateTimeAddHours datetime :: DateTime
    datetime hours :: Int32
    hours = IO (Maybe DateTime) -> m (Maybe DateTime)
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO (Maybe DateTime) -> m (Maybe DateTime))
    -> IO (Maybe DateTime) -> m (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr DateTime
    datetime' <- DateTime -> IO (Ptr DateTime)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr DateTime
    datetime
        Ptr DateTime
    result <- Ptr DateTime -> Int32 -> IO (Ptr DateTime)
    g_date_time_add_hours Ptr DateTime
    datetime' Int32
    hours
        Maybe DateTime
    maybeResult <- Ptr DateTime
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. Ptr a -> (Ptr a -> IO b) -> IO (Maybe b)
    convertIfNonNull Ptr DateTime
    result ((Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime))
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ \result' :: Ptr DateTime
    result' -> do
            DateTime
    result'' <- ((ManagedPtr DateTime -> DateTime) -> Ptr DateTime -> IO DateTime
    forall a.
    (HasCallStack, GBoxed a) =>
    (ManagedPtr a -> a) -> Ptr a -> IO a
    wrapBoxed ManagedPtr DateTime -> DateTime
    DateTime) Ptr DateTime
    result'
            DateTime -> IO DateTime
    forall (m :: * -> *) a. Monad m => a -> m a
    return DateTime
    result''
        DateTime -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr DateTime
    datetime
        Maybe DateTime -> IO (Maybe DateTime)
    forall (m :: * -> *) a. Monad m => a -> m a
    return Maybe DateTime
    maybeResult

    #if defined(ENABLE_OVERLOADING)
    data DateTimeAddHoursMethodInfo
    instance (signature ~ (Int32 -> m (Maybe DateTime)), MonadIO m) => O.MethodInfo DateTimeAddHoursMethodInfo DateTime signature where
        overloadedMethod = dateTimeAddHours

    #endif

    -- method DateTime::add_minutes
    -- method type : OrdinaryMethod
    -- Args: [ Arg
    --           { argCName = "datetime"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "DateTime" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GDateTime" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       , Arg
    --           { argCName = "minutes"
    --           , argType = TBasicType TInt
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "the number of minutes to add"
    --                 , sinceVersion = Nothing
    --                 }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TInterface Name { namespace = "GLib" , name = "DateTime" })
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_add_minutes" g_date_time_add_minutes ::
        Ptr DateTime ->                         -- datetime : TInterface (Name {namespace = "GLib", name = "DateTime"})
        Int32 ->                                -- minutes : TBasicType TInt
        IO (Ptr DateTime)

    -- | Creates a copy of /@datetime@/ adding the specified number of minutes.
    -- Add negative values to subtract minutes.
    --
    -- /Since: 2.26/
    dateTimeAddMinutes ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        DateTime
        -- ^ /@datetime@/: a t'GI.GLib.Structs.DateTime.DateTime'
        -> Int32
        -- ^ /@minutes@/: the number of minutes to add
        -> m (Maybe DateTime)
        -- ^ __Returns:__ the newly created t'GI.GLib.Structs.DateTime.DateTime' which
        --   should be freed with 'GI.GLib.Structs.DateTime.dateTimeUnref', or 'P.Nothing'
    dateTimeAddMinutes :: DateTime -> Int32 -> m (Maybe DateTime)
    dateTimeAddMinutes datetime :: DateTime
    datetime minutes :: Int32
    minutes = IO (Maybe DateTime) -> m (Maybe DateTime)
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO (Maybe DateTime) -> m (Maybe DateTime))
    -> IO (Maybe DateTime) -> m (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr DateTime
    datetime' <- DateTime -> IO (Ptr DateTime)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr DateTime
    datetime
        Ptr DateTime
    result <- Ptr DateTime -> Int32 -> IO (Ptr DateTime)
    g_date_time_add_minutes Ptr DateTime
    datetime' Int32
    minutes
        Maybe DateTime
    maybeResult <- Ptr DateTime
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. Ptr a -> (Ptr a -> IO b) -> IO (Maybe b)
    convertIfNonNull Ptr DateTime
    result ((Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime))
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ \result' :: Ptr DateTime
    result' -> do
            DateTime
    result'' <- ((ManagedPtr DateTime -> DateTime) -> Ptr DateTime -> IO DateTime
    forall a.
    (HasCallStack, GBoxed a) =>
    (ManagedPtr a -> a) -> Ptr a -> IO a
    wrapBoxed ManagedPtr DateTime -> DateTime
    DateTime) Ptr DateTime
    result'
            DateTime -> IO DateTime
    forall (m :: * -> *) a. Monad m => a -> m a
    return DateTime
    result''
        DateTime -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr DateTime
    datetime
        Maybe DateTime -> IO (Maybe DateTime)
    forall (m :: * -> *) a. Monad m => a -> m a
    return Maybe DateTime
    maybeResult

    #if defined(ENABLE_OVERLOADING)
    data DateTimeAddMinutesMethodInfo
    instance (signature ~ (Int32 -> m (Maybe DateTime)), MonadIO m) => O.MethodInfo DateTimeAddMinutesMethodInfo DateTime signature where
        overloadedMethod = dateTimeAddMinutes

    #endif

    -- method DateTime::add_months
    -- method type : OrdinaryMethod
    -- Args: [ Arg
    --           { argCName = "datetime"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "DateTime" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GDateTime" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       , Arg
    --           { argCName = "months"
    --           , argType = TBasicType TInt
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "the number of months"
    --                 , sinceVersion = Nothing
    --                 }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TInterface Name { namespace = "GLib" , name = "DateTime" })
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_add_months" g_date_time_add_months ::
        Ptr DateTime ->                         -- datetime : TInterface (Name {namespace = "GLib", name = "DateTime"})
        Int32 ->                                -- months : TBasicType TInt
        IO (Ptr DateTime)

    -- | Creates a copy of /@datetime@/ and adds the specified number of months to the
    -- copy. Add negative values to subtract months.
    --
    -- The day of the month of the resulting t'GI.GLib.Structs.DateTime.DateTime' is clamped to the number
    -- of days in the updated calendar month. For example, if adding 1 month to
    -- 31st January 2018, the result would be 28th February 2018. In 2020 (a leap
    -- year), the result would be 29th February.
    --
    -- /Since: 2.26/
    dateTimeAddMonths ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        DateTime
        -- ^ /@datetime@/: a t'GI.GLib.Structs.DateTime.DateTime'
        -> Int32
        -- ^ /@months@/: the number of months
        -> m (Maybe DateTime)
        -- ^ __Returns:__ the newly created t'GI.GLib.Structs.DateTime.DateTime' which
        --   should be freed with 'GI.GLib.Structs.DateTime.dateTimeUnref', or 'P.Nothing'
    dateTimeAddMonths :: DateTime -> Int32 -> m (Maybe DateTime)
    dateTimeAddMonths datetime :: DateTime
    datetime months :: Int32
    months = IO (Maybe DateTime) -> m (Maybe DateTime)
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO (Maybe DateTime) -> m (Maybe DateTime))
    -> IO (Maybe DateTime) -> m (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr DateTime
    datetime' <- DateTime -> IO (Ptr DateTime)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr DateTime
    datetime
        Ptr DateTime
    result <- Ptr DateTime -> Int32 -> IO (Ptr DateTime)
    g_date_time_add_months Ptr DateTime
    datetime' Int32
    months
        Maybe DateTime
    maybeResult <- Ptr DateTime
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. Ptr a -> (Ptr a -> IO b) -> IO (Maybe b)
    convertIfNonNull Ptr DateTime
    result ((Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime))
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ \result' :: Ptr DateTime
    result' -> do
            DateTime
    result'' <- ((ManagedPtr DateTime -> DateTime) -> Ptr DateTime -> IO DateTime
    forall a.
    (HasCallStack, GBoxed a) =>
    (ManagedPtr a -> a) -> Ptr a -> IO a
    wrapBoxed ManagedPtr DateTime -> DateTime
    DateTime) Ptr DateTime
    result'
            DateTime -> IO DateTime
    forall (m :: * -> *) a. Monad m => a -> m a
    return DateTime
    result''
        DateTime -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr DateTime
    datetime
        Maybe DateTime -> IO (Maybe DateTime)
    forall (m :: * -> *) a. Monad m => a -> m a
    return Maybe DateTime
    maybeResult

    #if defined(ENABLE_OVERLOADING)
    data DateTimeAddMonthsMethodInfo
    instance (signature ~ (Int32 -> m (Maybe DateTime)), MonadIO m) => O.MethodInfo DateTimeAddMonthsMethodInfo DateTime signature where
        overloadedMethod = dateTimeAddMonths

    #endif

    -- method DateTime::add_seconds
    -- method type : OrdinaryMethod
    -- Args: [ Arg
    --           { argCName = "datetime"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "DateTime" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GDateTime" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       , Arg
    --           { argCName = "seconds"
    --           , argType = TBasicType TDouble
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "the number of seconds to add"
    --                 , sinceVersion = Nothing
    --                 }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TInterface Name { namespace = "GLib" , name = "DateTime" })
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_add_seconds" g_date_time_add_seconds ::
        Ptr DateTime ->                         -- datetime : TInterface (Name {namespace = "GLib", name = "DateTime"})
        CDouble ->                              -- seconds : TBasicType TDouble
        IO (Ptr DateTime)

    -- | Creates a copy of /@datetime@/ and adds the specified number of seconds.
    -- Add negative values to subtract seconds.
    --
    -- /Since: 2.26/
    dateTimeAddSeconds ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        DateTime
        -- ^ /@datetime@/: a t'GI.GLib.Structs.DateTime.DateTime'
        -> Double
        -- ^ /@seconds@/: the number of seconds to add
        -> m (Maybe DateTime)
        -- ^ __Returns:__ the newly created t'GI.GLib.Structs.DateTime.DateTime' which
        --   should be freed with 'GI.GLib.Structs.DateTime.dateTimeUnref', or 'P.Nothing'
    dateTimeAddSeconds :: DateTime -> Double -> m (Maybe DateTime)
    dateTimeAddSeconds datetime :: DateTime
    datetime seconds :: Double
    seconds = IO (Maybe DateTime) -> m (Maybe DateTime)
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO (Maybe DateTime) -> m (Maybe DateTime))
    -> IO (Maybe DateTime) -> m (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr DateTime
    datetime' <- DateTime -> IO (Ptr DateTime)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr DateTime
    datetime
        let seconds' :: CDouble
    seconds' = Double -> CDouble
    forall a b. (Real a, Fractional b) => a -> b
    realToFrac Double
    seconds
        Ptr DateTime
    result <- Ptr DateTime -> CDouble -> IO (Ptr DateTime)
    g_date_time_add_seconds Ptr DateTime
    datetime' CDouble
    seconds'
        Maybe DateTime
    maybeResult <- Ptr DateTime
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. Ptr a -> (Ptr a -> IO b) -> IO (Maybe b)
    convertIfNonNull Ptr DateTime
    result ((Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime))
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ \result' :: Ptr DateTime
    result' -> do
            DateTime
    result'' <- ((ManagedPtr DateTime -> DateTime) -> Ptr DateTime -> IO DateTime
    forall a.
    (HasCallStack, GBoxed a) =>
    (ManagedPtr a -> a) -> Ptr a -> IO a
    wrapBoxed ManagedPtr DateTime -> DateTime
    DateTime) Ptr DateTime
    result'
            DateTime -> IO DateTime
    forall (m :: * -> *) a. Monad m => a -> m a
    return DateTime
    result''
        DateTime -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr DateTime
    datetime
        Maybe DateTime -> IO (Maybe DateTime)
    forall (m :: * -> *) a. Monad m => a -> m a
    return Maybe DateTime
    maybeResult

    #if defined(ENABLE_OVERLOADING)
    data DateTimeAddSecondsMethodInfo
    instance (signature ~ (Double -> m (Maybe DateTime)), MonadIO m) => O.MethodInfo DateTimeAddSecondsMethodInfo DateTime signature where
        overloadedMethod = dateTimeAddSeconds

    #endif

    -- method DateTime::add_weeks
    -- method type : OrdinaryMethod
    -- Args: [ Arg
    --           { argCName = "datetime"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "DateTime" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GDateTime" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       , Arg
    --           { argCName = "weeks"
    --           , argType = TBasicType TInt
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "the number of weeks"
    --                 , sinceVersion = Nothing
    --                 }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TInterface Name { namespace = "GLib" , name = "DateTime" })
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_add_weeks" g_date_time_add_weeks ::
        Ptr DateTime ->                         -- datetime : TInterface (Name {namespace = "GLib", name = "DateTime"})
        Int32 ->                                -- weeks : TBasicType TInt
        IO (Ptr DateTime)

    -- | Creates a copy of /@datetime@/ and adds the specified number of weeks to the
    -- copy. Add negative values to subtract weeks.
    --
    -- /Since: 2.26/
    dateTimeAddWeeks ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        DateTime
        -- ^ /@datetime@/: a t'GI.GLib.Structs.DateTime.DateTime'
        -> Int32
        -- ^ /@weeks@/: the number of weeks
        -> m (Maybe DateTime)
        -- ^ __Returns:__ the newly created t'GI.GLib.Structs.DateTime.DateTime' which
        --   should be freed with 'GI.GLib.Structs.DateTime.dateTimeUnref', or 'P.Nothing'
    dateTimeAddWeeks :: DateTime -> Int32 -> m (Maybe DateTime)
    dateTimeAddWeeks datetime :: DateTime
    datetime weeks :: Int32
    weeks = IO (Maybe DateTime) -> m (Maybe DateTime)
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO (Maybe DateTime) -> m (Maybe DateTime))
    -> IO (Maybe DateTime) -> m (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr DateTime
    datetime' <- DateTime -> IO (Ptr DateTime)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr DateTime
    datetime
        Ptr DateTime
    result <- Ptr DateTime -> Int32 -> IO (Ptr DateTime)
    g_date_time_add_weeks Ptr DateTime
    datetime' Int32
    weeks
        Maybe DateTime
    maybeResult <- Ptr DateTime
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. Ptr a -> (Ptr a -> IO b) -> IO (Maybe b)
    convertIfNonNull Ptr DateTime
    result ((Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime))
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ \result' :: Ptr DateTime
    result' -> do
            DateTime
    result'' <- ((ManagedPtr DateTime -> DateTime) -> Ptr DateTime -> IO DateTime
    forall a.
    (HasCallStack, GBoxed a) =>
    (ManagedPtr a -> a) -> Ptr a -> IO a
    wrapBoxed ManagedPtr DateTime -> DateTime
    DateTime) Ptr DateTime
    result'
            DateTime -> IO DateTime
    forall (m :: * -> *) a. Monad m => a -> m a
    return DateTime
    result''
        DateTime -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr DateTime
    datetime
        Maybe DateTime -> IO (Maybe DateTime)
    forall (m :: * -> *) a. Monad m => a -> m a
    return Maybe DateTime
    maybeResult

    #if defined(ENABLE_OVERLOADING)
    data DateTimeAddWeeksMethodInfo
    instance (signature ~ (Int32 -> m (Maybe DateTime)), MonadIO m) => O.MethodInfo DateTimeAddWeeksMethodInfo DateTime signature where
        overloadedMethod = dateTimeAddWeeks

    #endif

    -- method DateTime::add_years
    -- method type : OrdinaryMethod
    -- Args: [ Arg
    --           { argCName = "datetime"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "DateTime" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GDateTime" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       , Arg
    --           { argCName = "years"
    --           , argType = TBasicType TInt
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "the number of years"
    --                 , sinceVersion = Nothing
    --                 }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TInterface Name { namespace = "GLib" , name = "DateTime" })
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_add_years" g_date_time_add_years ::
        Ptr DateTime ->                         -- datetime : TInterface (Name {namespace = "GLib", name = "DateTime"})
        Int32 ->                                -- years : TBasicType TInt
        IO (Ptr DateTime)

    -- | Creates a copy of /@datetime@/ and adds the specified number of years to the
    -- copy. Add negative values to subtract years.
    --
    -- As with 'GI.GLib.Structs.DateTime.dateTimeAddMonths', if the resulting date would be 29th
    -- February on a non-leap year, the day will be clamped to 28th February.
    --
    -- /Since: 2.26/
    dateTimeAddYears ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        DateTime
        -- ^ /@datetime@/: a t'GI.GLib.Structs.DateTime.DateTime'
        -> Int32
        -- ^ /@years@/: the number of years
        -> m (Maybe DateTime)
        -- ^ __Returns:__ the newly created t'GI.GLib.Structs.DateTime.DateTime' which
        --   should be freed with 'GI.GLib.Structs.DateTime.dateTimeUnref', or 'P.Nothing'
    dateTimeAddYears :: DateTime -> Int32 -> m (Maybe DateTime)
    dateTimeAddYears datetime :: DateTime
    datetime years :: Int32
    years = IO (Maybe DateTime) -> m (Maybe DateTime)
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO (Maybe DateTime) -> m (Maybe DateTime))
    -> IO (Maybe DateTime) -> m (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr DateTime
    datetime' <- DateTime -> IO (Ptr DateTime)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr DateTime
    datetime
        Ptr DateTime
    result <- Ptr DateTime -> Int32 -> IO (Ptr DateTime)
    g_date_time_add_years Ptr DateTime
    datetime' Int32
    years
        Maybe DateTime
    maybeResult <- Ptr DateTime
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. Ptr a -> (Ptr a -> IO b) -> IO (Maybe b)
    convertIfNonNull Ptr DateTime
    result ((Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime))
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ \result' :: Ptr DateTime
    result' -> do
            DateTime
    result'' <- ((ManagedPtr DateTime -> DateTime) -> Ptr DateTime -> IO DateTime
    forall a.
    (HasCallStack, GBoxed a) =>
    (ManagedPtr a -> a) -> Ptr a -> IO a
    wrapBoxed ManagedPtr DateTime -> DateTime
    DateTime) Ptr DateTime
    result'
            DateTime -> IO DateTime
    forall (m :: * -> *) a. Monad m => a -> m a
    return DateTime
    result''
        DateTime -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr DateTime
    datetime
        Maybe DateTime -> IO (Maybe DateTime)
    forall (m :: * -> *) a. Monad m => a -> m a
    return Maybe DateTime
    maybeResult

    #if defined(ENABLE_OVERLOADING)
    data DateTimeAddYearsMethodInfo
    instance (signature ~ (Int32 -> m (Maybe DateTime)), MonadIO m) => O.MethodInfo DateTimeAddYearsMethodInfo DateTime signature where
        overloadedMethod = dateTimeAddYears

    #endif

    -- method DateTime::difference
    -- method type : OrdinaryMethod
    -- Args: [ Arg
    --           { argCName = "end"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "DateTime" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GDateTime" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       , Arg
    --           { argCName = "begin"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "DateTime" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GDateTime" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TBasicType TInt64)
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_difference" g_date_time_difference ::
        Ptr DateTime ->                         -- end : TInterface (Name {namespace = "GLib", name = "DateTime"})
        Ptr DateTime ->                         -- begin : TInterface (Name {namespace = "GLib", name = "DateTime"})
        IO Int64

    -- | Calculates the difference in time between /@end@/ and /@begin@/.  The
    -- @/GTimeSpan/@ that is returned is effectively /@end@/ - /@begin@/ (ie:
    -- positive if the first parameter is larger).
    --
    -- /Since: 2.26/
    dateTimeDifference ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        DateTime
        -- ^ /@end@/: a t'GI.GLib.Structs.DateTime.DateTime'
        -> DateTime
        -- ^ /@begin@/: a t'GI.GLib.Structs.DateTime.DateTime'
        -> m Int64
        -- ^ __Returns:__ the difference between the two t'GI.GLib.Structs.DateTime.DateTime', as a time
        --   span expressed in microseconds.
    dateTimeDifference :: DateTime -> DateTime -> m Int64
    dateTimeDifference end :: DateTime
    end begin :: DateTime
    begin = IO Int64 -> m Int64
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO Int64 -> m Int64) -> IO Int64 -> m Int64
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr DateTime
    end' <- DateTime -> IO (Ptr DateTime)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr DateTime
    end
        Ptr DateTime
    begin' <- DateTime -> IO (Ptr DateTime)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr DateTime
    begin
        Int64
    result <- Ptr DateTime -> Ptr DateTime -> IO Int64
    g_date_time_difference Ptr DateTime
    end' Ptr DateTime
    begin'
        DateTime -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr DateTime
    end
        DateTime -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr DateTime
    begin
        Int64 -> IO Int64
    forall (m :: * -> *) a. Monad m => a -> m a
    return Int64
    result

    #if defined(ENABLE_OVERLOADING)
    data DateTimeDifferenceMethodInfo
    instance (signature ~ (DateTime -> m Int64), MonadIO m) => O.MethodInfo DateTimeDifferenceMethodInfo DateTime signature where
        overloadedMethod = dateTimeDifference

    #endif

    -- method DateTime::format
    -- method type : OrdinaryMethod
    -- Args: [ Arg
    --           { argCName = "datetime"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "DateTime" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "A #GDateTime" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       , Arg
    --           { argCName = "format"
    --           , argType = TBasicType TUTF8
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText =
    --                     Just
    --                       "a valid UTF-8 string, containing the format for the\n         #GDateTime"
    --                 , sinceVersion = Nothing
    --                 }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TBasicType TUTF8)
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_format" g_date_time_format ::
        Ptr DateTime ->                         -- datetime : TInterface (Name {namespace = "GLib", name = "DateTime"})
        CString ->                              -- format : TBasicType TUTF8
        IO CString

    -- | Creates a newly allocated string representing the requested /@format@/.
    --
    -- The format strings understood by this function are a subset of the
    -- @/strftime()/@ format language as specified by C99.  The %D, %U and %W
    -- conversions are not supported, nor is the \'E\' modifier.  The GNU
    -- extensions %k, %l, %s and %P are supported, however, as are the
    -- \'0\', \'_\' and \'-\' modifiers. The Python extension %f is also supported.
    --
    -- In contrast to @/strftime()/@, this function always produces a UTF-8
    -- string, regardless of the current locale.  Note that the rendering of
    -- many formats is locale-dependent and may not match the @/strftime()/@
    -- output exactly.
    --
    -- The following format specifiers are supported:
    --
    -- * %a: the abbreviated weekday name according to the current locale
    -- * %A: the full weekday name according to the current locale
    -- * %b: the abbreviated month name according to the current locale
    -- * %B: the full month name according to the current locale
    -- * %c: the preferred date and time representation for the current locale
    -- * %C: the century number (year\/100) as a 2-digit integer (00-99)
    -- * %d: the day of the month as a decimal number (range 01 to 31)
    -- * %e: the day of the month as a decimal number (range  1 to 31)
    -- * %F: equivalent to @%Y-%m-%d@ (the ISO 8601 date format)
    -- * %g: the last two digits of the ISO 8601 week-based year as a
    -- decimal number (00-99). This works well with %V and %u.
    -- * %G: the ISO 8601 week-based year as a decimal number. This works
    -- well with %V and %u.
    -- * %h: equivalent to %b
    -- * %H: the hour as a decimal number using a 24-hour clock (range 00 to 23)
    -- * %I: the hour as a decimal number using a 12-hour clock (range 01 to 12)
    -- * %j: the day of the year as a decimal number (range 001 to 366)
    -- * %k: the hour (24-hour clock) as a decimal number (range 0 to 23);
    -- single digits are preceded by a blank
    -- * %l: the hour (12-hour clock) as a decimal number (range 1 to 12);
    -- single digits are preceded by a blank
    -- * %m: the month as a decimal number (range 01 to 12)
    -- * %M: the minute as a decimal number (range 00 to 59)
    -- * %f: the microsecond as a decimal number (range 000000 to 999999)
    -- * %p: either \"AM\" or \"PM\" according to the given time value, or the
    -- corresponding  strings for the current locale.  Noon is treated as
    -- \"PM\" and midnight as \"AM\". Use of this format specifier is discouraged, as
    -- many locales have no concept of AM\/PM formatting. Use %c or %X instead.
    -- * %P: like %p but lowercase: \"am\" or \"pm\" or a corresponding string for
    -- the current locale. Use of this format specifier is discouraged, as
    -- many locales have no concept of AM\/PM formatting. Use %c or %X instead.
    -- * %r: the time in a.m. or p.m. notation. Use of this format specifier is
    -- discouraged, as many locales have no concept of AM\/PM formatting. Use %c
    -- or %X instead.
    -- * %R: the time in 24-hour notation (%H:%M)
    -- * %s: the number of seconds since the Epoch, that is, since 1970-01-01
    -- 00:00:00 UTC
    -- * %S: the second as a decimal number (range 00 to 60)
    -- * %t: a tab character
    -- * %T: the time in 24-hour notation with seconds (%H:%M:%S)
    -- * %u: the ISO 8601 standard day of the week as a decimal, range 1 to 7,
    --  Monday being 1. This works well with %G and %V.
    -- * %V: the ISO 8601 standard week number of the current year as a decimal
    -- number, range 01 to 53, where week 1 is the first week that has at
    -- least 4 days in the new year. See 'GI.GLib.Structs.DateTime.dateTimeGetWeekOfYear'.
    -- This works well with %G and %u.
    -- * %w: the day of the week as a decimal, range 0 to 6, Sunday being 0.
    -- This is not the ISO 8601 standard format -- use %u instead.
    -- * %x: the preferred date representation for the current locale without
    -- the time
    -- * %X: the preferred time representation for the current locale without
    -- the date
    -- * %y: the year as a decimal number without the century
    -- * %Y: the year as a decimal number including the century
    -- * %z: the time zone as an offset from UTC (+hhmm)
    -- * %:z: the time zone as an offset from UTC (+hh:mm).
    -- This is a gnulib @/strftime()/@ extension. Since: 2.38
    -- * %[z](#g:signal:z): the time zone as an offset from UTC (+hh:mm:ss). This is a
    -- gnulib @/strftime()/@ extension. Since: 2.38
    -- * %:[z](#g:signal:z): the time zone as an offset from UTC, with : to necessary
    -- precision (e.g., -04, +05:30). This is a gnulib @/strftime()/@ extension. Since: 2.38
    -- * %Z: the time zone or name or abbreviation
    -- * %%: a literal % character
    --
    --
    -- Some conversion specifications can be modified by preceding the
    -- conversion specifier by one or more modifier characters. The
    -- following modifiers are supported for many of the numeric
    -- conversions:
    --
    -- * O: Use alternative numeric symbols, if the current locale supports those.
    -- * _: Pad a numeric result with spaces. This overrides the default padding
    -- for the specifier.
    -- * -: Do not pad a numeric result. This overrides the default padding
    -- for the specifier.
    -- * 0: Pad a numeric result with zeros. This overrides the default padding
    -- for the specifier.
    --
    --
    -- Additionally, when O is used with B, b, or h, it produces the alternative
    -- form of a month name. The alternative form should be used when the month
    -- name is used without a day number (e.g., standalone). It is required in
    -- some languages (Baltic, Slavic, Greek, and more) due to their grammatical
    -- rules. For other languages there is no difference. %OB is a GNU and BSD
    -- @/strftime()/@ extension expected to be added to the future POSIX specification,
    -- %Ob and %Oh are GNU @/strftime()/@ extensions. Since: 2.56
    --
    -- /Since: 2.26/
    dateTimeFormat ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        DateTime
        -- ^ /@datetime@/: A t'GI.GLib.Structs.DateTime.DateTime'
        -> T.Text
        -- ^ /@format@/: a valid UTF-8 string, containing the format for the
        --          t'GI.GLib.Structs.DateTime.DateTime'
        -> m (Maybe T.Text)
        -- ^ __Returns:__ a newly allocated string formatted to
        --    the requested format or 'P.Nothing' in the case that there was an error (such
        --    as a format specifier not being supported in the current locale). The
        --    string should be freed with 'GI.GLib.Functions.free'.
    dateTimeFormat :: DateTime -> Text -> m (Maybe Text)
    dateTimeFormat datetime :: DateTime
    datetime format :: Text
    format = IO (Maybe Text) -> m (Maybe Text)
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO (Maybe Text) -> m (Maybe Text))
    -> IO (Maybe Text) -> m (Maybe Text)
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr DateTime
    datetime' <- DateTime -> IO (Ptr DateTime)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr DateTime
    datetime
        CString
    format' <- Text -> IO CString
    textToCString Text
    format
        CString
    result <- Ptr DateTime -> CString -> IO CString
    g_date_time_format Ptr DateTime
    datetime' CString
    format'
        Maybe Text
    maybeResult <- CString -> (CString -> IO Text) -> IO (Maybe Text)
    forall a b. Ptr a -> (Ptr a -> IO b) -> IO (Maybe b)
    convertIfNonNull CString
    result ((CString -> IO Text) -> IO (Maybe Text))
    -> (CString -> IO Text) -> IO (Maybe Text)
    forall a b. (a -> b) -> a -> b
    $ \result' :: CString
    result' -> do
            Text
    result'' <- HasCallStack => CString -> IO Text
    CString -> IO Text
    cstringToText CString
    result'
            CString -> IO ()
    forall a. Ptr a -> IO ()
    freeMem CString
    result'
            Text -> IO Text
    forall (m :: * -> *) a. Monad m => a -> m a
    return Text
    result''
        DateTime -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr DateTime
    datetime
        CString -> IO ()
    forall a. Ptr a -> IO ()
    freeMem CString
    format'
        Maybe Text -> IO (Maybe Text)
    forall (m :: * -> *) a. Monad m => a -> m a
    return Maybe Text
    maybeResult

    #if defined(ENABLE_OVERLOADING)
    data DateTimeFormatMethodInfo
    instance (signature ~ (T.Text -> m (Maybe T.Text)), MonadIO m) => O.MethodInfo DateTimeFormatMethodInfo DateTime signature where
        overloadedMethod = dateTimeFormat

    #endif

    -- method DateTime::format_iso8601
    -- method type : OrdinaryMethod
    -- Args: [ Arg
    --           { argCName = "datetime"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "DateTime" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "A #GDateTime" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TBasicType TUTF8)
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_format_iso8601" g_date_time_format_iso8601 ::
        Ptr DateTime ->                         -- datetime : TInterface (Name {namespace = "GLib", name = "DateTime"})
        IO CString

    -- | Format /@datetime@/ in <https://en.wikipedia.org/wiki/ISO_8601 ISO 8601 format>,
    -- including the date, time and time zone, and return that as a UTF-8 encoded
    -- string.
    --
    -- Since GLib 2.66, this will output to sub-second precision if needed.
    --
    -- /Since: 2.62/
    dateTimeFormatIso8601 ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        DateTime
        -- ^ /@datetime@/: A t'GI.GLib.Structs.DateTime.DateTime'
        -> m (Maybe T.Text)
        -- ^ __Returns:__ a newly allocated string formatted in
        --   ISO 8601 format or 'P.Nothing' in the case that there was an error. The string
        --   should be freed with 'GI.GLib.Functions.free'.
    dateTimeFormatIso8601 :: DateTime -> m (Maybe Text)
    dateTimeFormatIso8601 datetime :: DateTime
    datetime = IO (Maybe Text) -> m (Maybe Text)
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO (Maybe Text) -> m (Maybe Text))
    -> IO (Maybe Text) -> m (Maybe Text)
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr DateTime
    datetime' <- DateTime -> IO (Ptr DateTime)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr DateTime
    datetime
        CString
    result <- Ptr DateTime -> IO CString
    g_date_time_format_iso8601 Ptr DateTime
    datetime'
        Maybe Text
    maybeResult <- CString -> (CString -> IO Text) -> IO (Maybe Text)
    forall a b. Ptr a -> (Ptr a -> IO b) -> IO (Maybe b)
    convertIfNonNull CString
    result ((CString -> IO Text) -> IO (Maybe Text))
    -> (CString -> IO Text) -> IO (Maybe Text)
    forall a b. (a -> b) -> a -> b
    $ \result' :: CString
    result' -> do
            Text
    result'' <- HasCallStack => CString -> IO Text
    CString -> IO Text
    cstringToText CString
    result'
            CString -> IO ()
    forall a. Ptr a -> IO ()
    freeMem CString
    result'
            Text -> IO Text
    forall (m :: * -> *) a. Monad m => a -> m a
    return Text
    result''
        DateTime -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr DateTime
    datetime
        Maybe Text -> IO (Maybe Text)
    forall (m :: * -> *) a. Monad m => a -> m a
    return Maybe Text
    maybeResult

    #if defined(ENABLE_OVERLOADING)
    data DateTimeFormatIso8601MethodInfo
    instance (signature ~ (m (Maybe T.Text)), MonadIO m) => O.MethodInfo DateTimeFormatIso8601MethodInfo DateTime signature where
        overloadedMethod = dateTimeFormatIso8601

    #endif

    -- method DateTime::get_day_of_month
    -- method type : OrdinaryMethod
    -- Args: [ Arg
    --           { argCName = "datetime"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "DateTime" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GDateTime" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TBasicType TInt)
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_get_day_of_month" g_date_time_get_day_of_month ::
        Ptr DateTime ->                         -- datetime : TInterface (Name {namespace = "GLib", name = "DateTime"})
        IO Int32

    -- | Retrieves the day of the month represented by /@datetime@/ in the gregorian
    -- calendar.
    --
    -- /Since: 2.26/
    dateTimeGetDayOfMonth ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        DateTime
        -- ^ /@datetime@/: a t'GI.GLib.Structs.DateTime.DateTime'
        -> m Int32
        -- ^ __Returns:__ the day of the month
    dateTimeGetDayOfMonth :: DateTime -> m Int32
    dateTimeGetDayOfMonth datetime :: DateTime
    datetime = IO Int32 -> m Int32
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO Int32 -> m Int32) -> IO Int32 -> m Int32
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr DateTime
    datetime' <- DateTime -> IO (Ptr DateTime)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr DateTime
    datetime
        Int32
    result <- Ptr DateTime -> IO Int32
    g_date_time_get_day_of_month Ptr DateTime
    datetime'
        DateTime -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr DateTime
    datetime
        Int32 -> IO Int32
    forall (m :: * -> *) a. Monad m => a -> m a
    return Int32
    result

    #if defined(ENABLE_OVERLOADING)
    data DateTimeGetDayOfMonthMethodInfo
    instance (signature ~ (m Int32), MonadIO m) => O.MethodInfo DateTimeGetDayOfMonthMethodInfo DateTime signature where
        overloadedMethod = dateTimeGetDayOfMonth

    #endif

    -- method DateTime::get_day_of_week
    -- method type : OrdinaryMethod
    -- Args: [ Arg
    --           { argCName = "datetime"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "DateTime" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GDateTime" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TBasicType TInt)
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_get_day_of_week" g_date_time_get_day_of_week ::
        Ptr DateTime ->                         -- datetime : TInterface (Name {namespace = "GLib", name = "DateTime"})
        IO Int32

    -- | Retrieves the ISO 8601 day of the week on which /@datetime@/ falls (1 is
    -- Monday, 2 is Tuesday... 7 is Sunday).
    --
    -- /Since: 2.26/
    dateTimeGetDayOfWeek ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        DateTime
        -- ^ /@datetime@/: a t'GI.GLib.Structs.DateTime.DateTime'
        -> m Int32
        -- ^ __Returns:__ the day of the week
    dateTimeGetDayOfWeek :: DateTime -> m Int32
    dateTimeGetDayOfWeek datetime :: DateTime
    datetime = IO Int32 -> m Int32
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO Int32 -> m Int32) -> IO Int32 -> m Int32
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr DateTime
    datetime' <- DateTime -> IO (Ptr DateTime)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr DateTime
    datetime
        Int32
    result <- Ptr DateTime -> IO Int32
    g_date_time_get_day_of_week Ptr DateTime
    datetime'
        DateTime -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr DateTime
    datetime
        Int32 -> IO Int32
    forall (m :: * -> *) a. Monad m => a -> m a
    return Int32
    result

    #if defined(ENABLE_OVERLOADING)
    data DateTimeGetDayOfWeekMethodInfo
    instance (signature ~ (m Int32), MonadIO m) => O.MethodInfo DateTimeGetDayOfWeekMethodInfo DateTime signature where
        overloadedMethod = dateTimeGetDayOfWeek

    #endif

    -- method DateTime::get_day_of_year
    -- method type : OrdinaryMethod
    -- Args: [ Arg
    --           { argCName = "datetime"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "DateTime" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GDateTime" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TBasicType TInt)
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_get_day_of_year" g_date_time_get_day_of_year ::
        Ptr DateTime ->                         -- datetime : TInterface (Name {namespace = "GLib", name = "DateTime"})
        IO Int32

    -- | Retrieves the day of the year represented by /@datetime@/ in the Gregorian
    -- calendar.
    --
    -- /Since: 2.26/
    dateTimeGetDayOfYear ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        DateTime
        -- ^ /@datetime@/: a t'GI.GLib.Structs.DateTime.DateTime'
        -> m Int32
        -- ^ __Returns:__ the day of the year
    dateTimeGetDayOfYear :: DateTime -> m Int32
    dateTimeGetDayOfYear datetime :: DateTime
    datetime = IO Int32 -> m Int32
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO Int32 -> m Int32) -> IO Int32 -> m Int32
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr DateTime
    datetime' <- DateTime -> IO (Ptr DateTime)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr DateTime
    datetime
        Int32
    result <- Ptr DateTime -> IO Int32
    g_date_time_get_day_of_year Ptr DateTime
    datetime'
        DateTime -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr DateTime
    datetime
        Int32 -> IO Int32
    forall (m :: * -> *) a. Monad m => a -> m a
    return Int32
    result

    #if defined(ENABLE_OVERLOADING)
    data DateTimeGetDayOfYearMethodInfo
    instance (signature ~ (m Int32), MonadIO m) => O.MethodInfo DateTimeGetDayOfYearMethodInfo DateTime signature where
        overloadedMethod = dateTimeGetDayOfYear

    #endif

    -- method DateTime::get_hour
    -- method type : OrdinaryMethod
    -- Args: [ Arg
    --           { argCName = "datetime"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "DateTime" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GDateTime" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TBasicType TInt)
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_get_hour" g_date_time_get_hour ::
        Ptr DateTime ->                         -- datetime : TInterface (Name {namespace = "GLib", name = "DateTime"})
        IO Int32

    -- | Retrieves the hour of the day represented by /@datetime@/
    --
    -- /Since: 2.26/
    dateTimeGetHour ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        DateTime
        -- ^ /@datetime@/: a t'GI.GLib.Structs.DateTime.DateTime'
        -> m Int32
        -- ^ __Returns:__ the hour of the day
    dateTimeGetHour :: DateTime -> m Int32
    dateTimeGetHour datetime :: DateTime
    datetime = IO Int32 -> m Int32
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO Int32 -> m Int32) -> IO Int32 -> m Int32
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr DateTime
    datetime' <- DateTime -> IO (Ptr DateTime)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr DateTime
    datetime
        Int32
    result <- Ptr DateTime -> IO Int32
    g_date_time_get_hour Ptr DateTime
    datetime'
        DateTime -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr DateTime
    datetime
        Int32 -> IO Int32
    forall (m :: * -> *) a. Monad m => a -> m a
    return Int32
    result

    #if defined(ENABLE_OVERLOADING)
    data DateTimeGetHourMethodInfo
    instance (signature ~ (m Int32), MonadIO m) => O.MethodInfo DateTimeGetHourMethodInfo DateTime signature where
        overloadedMethod = dateTimeGetHour

    #endif

    -- method DateTime::get_microsecond
    -- method type : OrdinaryMethod
    -- Args: [ Arg
    --           { argCName = "datetime"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "DateTime" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GDateTime" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TBasicType TInt)
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_get_microsecond" g_date_time_get_microsecond ::
        Ptr DateTime ->                         -- datetime : TInterface (Name {namespace = "GLib", name = "DateTime"})
        IO Int32

    -- | Retrieves the microsecond of the date represented by /@datetime@/
    --
    -- /Since: 2.26/
    dateTimeGetMicrosecond ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        DateTime
        -- ^ /@datetime@/: a t'GI.GLib.Structs.DateTime.DateTime'
        -> m Int32
        -- ^ __Returns:__ the microsecond of the second
    dateTimeGetMicrosecond :: DateTime -> m Int32
    dateTimeGetMicrosecond datetime :: DateTime
    datetime = IO Int32 -> m Int32
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO Int32 -> m Int32) -> IO Int32 -> m Int32
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr DateTime
    datetime' <- DateTime -> IO (Ptr DateTime)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr DateTime
    datetime
        Int32
    result <- Ptr DateTime -> IO Int32
    g_date_time_get_microsecond Ptr DateTime
    datetime'
        DateTime -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr DateTime
    datetime
        Int32 -> IO Int32
    forall (m :: * -> *) a. Monad m => a -> m a
    return Int32
    result

    #if defined(ENABLE_OVERLOADING)
    data DateTimeGetMicrosecondMethodInfo
    instance (signature ~ (m Int32), MonadIO m) => O.MethodInfo DateTimeGetMicrosecondMethodInfo DateTime signature where
        overloadedMethod = dateTimeGetMicrosecond

    #endif

    -- method DateTime::get_minute
    -- method type : OrdinaryMethod
    -- Args: [ Arg
    --           { argCName = "datetime"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "DateTime" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GDateTime" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TBasicType TInt)
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_get_minute" g_date_time_get_minute ::
        Ptr DateTime ->                         -- datetime : TInterface (Name {namespace = "GLib", name = "DateTime"})
        IO Int32

    -- | Retrieves the minute of the hour represented by /@datetime@/
    --
    -- /Since: 2.26/
    dateTimeGetMinute ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        DateTime
        -- ^ /@datetime@/: a t'GI.GLib.Structs.DateTime.DateTime'
        -> m Int32
        -- ^ __Returns:__ the minute of the hour
    dateTimeGetMinute :: DateTime -> m Int32
    dateTimeGetMinute datetime :: DateTime
    datetime = IO Int32 -> m Int32
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO Int32 -> m Int32) -> IO Int32 -> m Int32
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr DateTime
    datetime' <- DateTime -> IO (Ptr DateTime)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr DateTime
    datetime
        Int32
    result <- Ptr DateTime -> IO Int32
    g_date_time_get_minute Ptr DateTime
    datetime'
        DateTime -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr DateTime
    datetime
        Int32 -> IO Int32
    forall (m :: * -> *) a. Monad m => a -> m a
    return Int32
    result

    #if defined(ENABLE_OVERLOADING)
    data DateTimeGetMinuteMethodInfo
    instance (signature ~ (m Int32), MonadIO m) => O.MethodInfo DateTimeGetMinuteMethodInfo DateTime signature where
        overloadedMethod = dateTimeGetMinute

    #endif

    -- method DateTime::get_month
    -- method type : OrdinaryMethod
    -- Args: [ Arg
    --           { argCName = "datetime"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "DateTime" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GDateTime" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TBasicType TInt)
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_get_month" g_date_time_get_month ::
        Ptr DateTime ->                         -- datetime : TInterface (Name {namespace = "GLib", name = "DateTime"})
        IO Int32

    -- | Retrieves the month of the year represented by /@datetime@/ in the Gregorian
    -- calendar.
    --
    -- /Since: 2.26/
    dateTimeGetMonth ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        DateTime
        -- ^ /@datetime@/: a t'GI.GLib.Structs.DateTime.DateTime'
        -> m Int32
        -- ^ __Returns:__ the month represented by /@datetime@/
    dateTimeGetMonth :: DateTime -> m Int32
    dateTimeGetMonth datetime :: DateTime
    datetime = IO Int32 -> m Int32
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO Int32 -> m Int32) -> IO Int32 -> m Int32
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr DateTime
    datetime' <- DateTime -> IO (Ptr DateTime)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr DateTime
    datetime
        Int32
    result <- Ptr DateTime -> IO Int32
    g_date_time_get_month Ptr DateTime
    datetime'
        DateTime -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr DateTime
    datetime
        Int32 -> IO Int32
    forall (m :: * -> *) a. Monad m => a -> m a
    return Int32
    result

    #if defined(ENABLE_OVERLOADING)
    data DateTimeGetMonthMethodInfo
    instance (signature ~ (m Int32), MonadIO m) => O.MethodInfo DateTimeGetMonthMethodInfo DateTime signature where
        overloadedMethod = dateTimeGetMonth

    #endif

    -- method DateTime::get_second
    -- method type : OrdinaryMethod
    -- Args: [ Arg
    --           { argCName = "datetime"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "DateTime" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GDateTime" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TBasicType TInt)
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_get_second" g_date_time_get_second ::
        Ptr DateTime ->                         -- datetime : TInterface (Name {namespace = "GLib", name = "DateTime"})
        IO Int32

    -- | Retrieves the second of the minute represented by /@datetime@/
    --
    -- /Since: 2.26/
    dateTimeGetSecond ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        DateTime
        -- ^ /@datetime@/: a t'GI.GLib.Structs.DateTime.DateTime'
        -> m Int32
        -- ^ __Returns:__ the second represented by /@datetime@/
    dateTimeGetSecond :: DateTime -> m Int32
    dateTimeGetSecond datetime :: DateTime
    datetime = IO Int32 -> m Int32
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO Int32 -> m Int32) -> IO Int32 -> m Int32
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr DateTime
    datetime' <- DateTime -> IO (Ptr DateTime)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr DateTime
    datetime
        Int32
    result <- Ptr DateTime -> IO Int32
    g_date_time_get_second Ptr DateTime
    datetime'
        DateTime -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr DateTime
    datetime
        Int32 -> IO Int32
    forall (m :: * -> *) a. Monad m => a -> m a
    return Int32
    result

    #if defined(ENABLE_OVERLOADING)
    data DateTimeGetSecondMethodInfo
    instance (signature ~ (m Int32), MonadIO m) => O.MethodInfo DateTimeGetSecondMethodInfo DateTime signature where
        overloadedMethod = dateTimeGetSecond

    #endif

    -- method DateTime::get_seconds
    -- method type : OrdinaryMethod
    -- Args: [ Arg
    --           { argCName = "datetime"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "DateTime" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GDateTime" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TBasicType TDouble)
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_get_seconds" g_date_time_get_seconds ::
        Ptr DateTime ->                         -- datetime : TInterface (Name {namespace = "GLib", name = "DateTime"})
        IO CDouble

    -- | Retrieves the number of seconds since the start of the last minute,
    -- including the fractional part.
    --
    -- /Since: 2.26/
    dateTimeGetSeconds ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        DateTime
        -- ^ /@datetime@/: a t'GI.GLib.Structs.DateTime.DateTime'
        -> m Double
        -- ^ __Returns:__ the number of seconds
    dateTimeGetSeconds :: DateTime -> m Double
    dateTimeGetSeconds datetime :: DateTime
    datetime = IO Double -> m Double
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO Double -> m Double) -> IO Double -> m Double
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr DateTime
    datetime' <- DateTime -> IO (Ptr DateTime)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr DateTime
    datetime
        CDouble
    result <- Ptr DateTime -> IO CDouble
    g_date_time_get_seconds Ptr DateTime
    datetime'
        let result' :: Double
    result' = CDouble -> Double
    forall a b. (Real a, Fractional b) => a -> b
    realToFrac CDouble
    result
        DateTime -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr DateTime
    datetime
        Double -> IO Double
    forall (m :: * -> *) a. Monad m => a -> m a
    return Double
    result'

    #if defined(ENABLE_OVERLOADING)
    data DateTimeGetSecondsMethodInfo
    instance (signature ~ (m Double), MonadIO m) => O.MethodInfo DateTimeGetSecondsMethodInfo DateTime signature where
        overloadedMethod = dateTimeGetSeconds

    #endif

    -- method DateTime::get_timezone
    -- method type : OrdinaryMethod
    -- Args: [ Arg
    --           { argCName = "datetime"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "DateTime" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GDateTime" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TInterface Name { namespace = "GLib" , name = "TimeZone" })
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_get_timezone" g_date_time_get_timezone ::
        Ptr DateTime ->                         -- datetime : TInterface (Name {namespace = "GLib", name = "DateTime"})
        IO (Ptr GLib.TimeZone.TimeZone)

    -- | Get the time zone for this /@datetime@/.
    --
    -- /Since: 2.58/
    dateTimeGetTimezone ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        DateTime
        -- ^ /@datetime@/: a t'GI.GLib.Structs.DateTime.DateTime'
        -> m GLib.TimeZone.TimeZone
        -- ^ __Returns:__ the time zone
    dateTimeGetTimezone :: DateTime -> m TimeZone
    dateTimeGetTimezone datetime :: DateTime
    datetime = IO TimeZone -> m TimeZone
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO TimeZone -> m TimeZone) -> IO TimeZone -> m TimeZone
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr DateTime
    datetime' <- DateTime -> IO (Ptr DateTime)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr DateTime
    datetime
        Ptr TimeZone
    result <- Ptr DateTime -> IO (Ptr TimeZone)
    g_date_time_get_timezone Ptr DateTime
    datetime'
        Text -> Ptr TimeZone -> IO ()
    forall a. HasCallStack => Text -> Ptr a -> IO ()
    checkUnexpectedReturnNULL "dateTimeGetTimezone" Ptr TimeZone
    result
        TimeZone
    result' <- ((ManagedPtr TimeZone -> TimeZone) -> Ptr TimeZone -> IO TimeZone
    forall a.
    (HasCallStack, GBoxed a) =>
    (ManagedPtr a -> a) -> Ptr a -> IO a
    newBoxed ManagedPtr TimeZone -> TimeZone
    GLib.TimeZone.TimeZone) Ptr TimeZone
    result
        DateTime -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr DateTime
    datetime
        TimeZone -> IO TimeZone
    forall (m :: * -> *) a. Monad m => a -> m a
    return TimeZone
    result'

    #if defined(ENABLE_OVERLOADING)
    data DateTimeGetTimezoneMethodInfo
    instance (signature ~ (m GLib.TimeZone.TimeZone), MonadIO m) => O.MethodInfo DateTimeGetTimezoneMethodInfo DateTime signature where
        overloadedMethod = dateTimeGetTimezone

    #endif

    -- method DateTime::get_timezone_abbreviation
    -- method type : OrdinaryMethod
    -- Args: [ Arg
    --           { argCName = "datetime"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "DateTime" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GDateTime" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TBasicType TUTF8)
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_get_timezone_abbreviation" g_date_time_get_timezone_abbreviation ::
        Ptr DateTime ->                         -- datetime : TInterface (Name {namespace = "GLib", name = "DateTime"})
        IO CString

    -- | Determines the time zone abbreviation to be used at the time and in
    -- the time zone of /@datetime@/.
    --
    -- For example, in Toronto this is currently \"EST\" during the winter
    -- months and \"EDT\" during the summer months when daylight savings
    -- time is in effect.
    --
    -- /Since: 2.26/
    dateTimeGetTimezoneAbbreviation ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        DateTime
        -- ^ /@datetime@/: a t'GI.GLib.Structs.DateTime.DateTime'
        -> m T.Text
        -- ^ __Returns:__ the time zone abbreviation. The returned
        --          string is owned by the t'GI.GLib.Structs.DateTime.DateTime' and it should not be
        --          modified or freed
    dateTimeGetTimezoneAbbreviation :: DateTime -> m Text
    dateTimeGetTimezoneAbbreviation datetime :: DateTime
    datetime = IO Text -> m Text
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO Text -> m Text) -> IO Text -> m Text
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr DateTime
    datetime' <- DateTime -> IO (Ptr DateTime)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr DateTime
    datetime
        CString
    result <- Ptr DateTime -> IO CString
    g_date_time_get_timezone_abbreviation Ptr DateTime
    datetime'
        Text -> CString -> IO ()
    forall a. HasCallStack => Text -> Ptr a -> IO ()
    checkUnexpectedReturnNULL "dateTimeGetTimezoneAbbreviation" CString
    result
        Text
    result' <- HasCallStack => CString -> IO Text
    CString -> IO Text
    cstringToText CString
    result
        DateTime -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr DateTime
    datetime
        Text -> IO Text
    forall (m :: * -> *) a. Monad m => a -> m a
    return Text
    result'

    #if defined(ENABLE_OVERLOADING)
    data DateTimeGetTimezoneAbbreviationMethodInfo
    instance (signature ~ (m T.Text), MonadIO m) => O.MethodInfo DateTimeGetTimezoneAbbreviationMethodInfo DateTime signature where
        overloadedMethod = dateTimeGetTimezoneAbbreviation

    #endif

    -- method DateTime::get_utc_offset
    -- method type : OrdinaryMethod
    -- Args: [ Arg
    --           { argCName = "datetime"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "DateTime" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GDateTime" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TBasicType TInt64)
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_get_utc_offset" g_date_time_get_utc_offset ::
        Ptr DateTime ->                         -- datetime : TInterface (Name {namespace = "GLib", name = "DateTime"})
        IO Int64

    -- | Determines the offset to UTC in effect at the time and in the time
    -- zone of /@datetime@/.
    --
    -- The offset is the number of microseconds that you add to UTC time to
    -- arrive at local time for the time zone (ie: negative numbers for time
    -- zones west of GMT, positive numbers for east).
    --
    -- If /@datetime@/ represents UTC time, then the offset is always zero.
    --
    -- /Since: 2.26/
    dateTimeGetUtcOffset ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        DateTime
        -- ^ /@datetime@/: a t'GI.GLib.Structs.DateTime.DateTime'
        -> m Int64
        -- ^ __Returns:__ the number of microseconds that should be added to UTC to
        --          get the local time
    dateTimeGetUtcOffset :: DateTime -> m Int64
    dateTimeGetUtcOffset datetime :: DateTime
    datetime = IO Int64 -> m Int64
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO Int64 -> m Int64) -> IO Int64 -> m Int64
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr DateTime
    datetime' <- DateTime -> IO (Ptr DateTime)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr DateTime
    datetime
        Int64
    result <- Ptr DateTime -> IO Int64
    g_date_time_get_utc_offset Ptr DateTime
    datetime'
        DateTime -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr DateTime
    datetime
        Int64 -> IO Int64
    forall (m :: * -> *) a. Monad m => a -> m a
    return Int64
    result

    #if defined(ENABLE_OVERLOADING)
    data DateTimeGetUtcOffsetMethodInfo
    instance (signature ~ (m Int64), MonadIO m) => O.MethodInfo DateTimeGetUtcOffsetMethodInfo DateTime signature where
        overloadedMethod = dateTimeGetUtcOffset

    #endif

    -- method DateTime::get_week_numbering_year
    -- method type : OrdinaryMethod
    -- Args: [ Arg
    --           { argCName = "datetime"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "DateTime" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GDateTime" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TBasicType TInt)
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_get_week_numbering_year" g_date_time_get_week_numbering_year ::
        Ptr DateTime ->                         -- datetime : TInterface (Name {namespace = "GLib", name = "DateTime"})
        IO Int32

    -- | Returns the ISO 8601 week-numbering year in which the week containing
    -- /@datetime@/ falls.
    --
    -- This function, taken together with 'GI.GLib.Structs.DateTime.dateTimeGetWeekOfYear' and
    -- 'GI.GLib.Structs.DateTime.dateTimeGetDayOfWeek' can be used to determine the full ISO
    -- week date on which /@datetime@/ falls.
    --
    -- This is usually equal to the normal Gregorian year (as returned by
    -- 'GI.GLib.Structs.DateTime.dateTimeGetYear'), except as detailed below:
    --
    -- For Thursday, the week-numbering year is always equal to the usual
    -- calendar year.  For other days, the number is such that every day
    -- within a complete week (Monday to Sunday) is contained within the
    -- same week-numbering year.
    --
    -- For Monday, Tuesday and Wednesday occurring near the end of the year,
    -- this may mean that the week-numbering year is one greater than the
    -- calendar year (so that these days have the same week-numbering year
    -- as the Thursday occurring early in the next year).
    --
    -- For Friday, Saturday and Sunday occurring near the start of the year,
    -- this may mean that the week-numbering year is one less than the
    -- calendar year (so that these days have the same week-numbering year
    -- as the Thursday occurring late in the previous year).
    --
    -- An equivalent description is that the week-numbering year is equal to
    -- the calendar year containing the majority of the days in the current
    -- week (Monday to Sunday).
    --
    -- Note that January 1 0001 in the proleptic Gregorian calendar is a
    -- Monday, so this function never returns 0.
    --
    -- /Since: 2.26/
    dateTimeGetWeekNumberingYear ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        DateTime
        -- ^ /@datetime@/: a t'GI.GLib.Structs.DateTime.DateTime'
        -> m Int32
        -- ^ __Returns:__ the ISO 8601 week-numbering year for /@datetime@/
    dateTimeGetWeekNumberingYear :: DateTime -> m Int32
    dateTimeGetWeekNumberingYear datetime :: DateTime
    datetime = IO Int32 -> m Int32
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO Int32 -> m Int32) -> IO Int32 -> m Int32
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr DateTime
    datetime' <- DateTime -> IO (Ptr DateTime)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr DateTime
    datetime
        Int32
    result <- Ptr DateTime -> IO Int32
    g_date_time_get_week_numbering_year Ptr DateTime
    datetime'
        DateTime -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr DateTime
    datetime
        Int32 -> IO Int32
    forall (m :: * -> *) a. Monad m => a -> m a
    return Int32
    result

    #if defined(ENABLE_OVERLOADING)
    data DateTimeGetWeekNumberingYearMethodInfo
    instance (signature ~ (m Int32), MonadIO m) => O.MethodInfo DateTimeGetWeekNumberingYearMethodInfo DateTime signature where
        overloadedMethod = dateTimeGetWeekNumberingYear

    #endif

    -- method DateTime::get_week_of_year
    -- method type : OrdinaryMethod
    -- Args: [ Arg
    --           { argCName = "datetime"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "DateTime" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GDateTime" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TBasicType TInt)
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_get_week_of_year" g_date_time_get_week_of_year ::
        Ptr DateTime ->                         -- datetime : TInterface (Name {namespace = "GLib", name = "DateTime"})
        IO Int32

    -- | Returns the ISO 8601 week number for the week containing /@datetime@/.
    -- The ISO 8601 week number is the same for every day of the week (from
    -- Moday through Sunday).  That can produce some unusual results
    -- (described below).
    --
    -- The first week of the year is week 1.  This is the week that contains
    -- the first Thursday of the year.  Equivalently, this is the first week
    -- that has more than 4 of its days falling within the calendar year.
    --
    -- The value 0 is never returned by this function.  Days contained
    -- within a year but occurring before the first ISO 8601 week of that
    -- year are considered as being contained in the last week of the
    -- previous year.  Similarly, the final days of a calendar year may be
    -- considered as being part of the first ISO 8601 week of the next year
    -- if 4 or more days of that week are contained within the new year.
    --
    -- /Since: 2.26/
    dateTimeGetWeekOfYear ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        DateTime
        -- ^ /@datetime@/: a t'GI.GLib.Structs.DateTime.DateTime'
        -> m Int32
        -- ^ __Returns:__ the ISO 8601 week number for /@datetime@/.
    dateTimeGetWeekOfYear :: DateTime -> m Int32
    dateTimeGetWeekOfYear datetime :: DateTime
    datetime = IO Int32 -> m Int32
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO Int32 -> m Int32) -> IO Int32 -> m Int32
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr DateTime
    datetime' <- DateTime -> IO (Ptr DateTime)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr DateTime
    datetime
        Int32
    result <- Ptr DateTime -> IO Int32
    g_date_time_get_week_of_year Ptr DateTime
    datetime'
        DateTime -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr DateTime
    datetime
        Int32 -> IO Int32
    forall (m :: * -> *) a. Monad m => a -> m a
    return Int32
    result

    #if defined(ENABLE_OVERLOADING)
    data DateTimeGetWeekOfYearMethodInfo
    instance (signature ~ (m Int32), MonadIO m) => O.MethodInfo DateTimeGetWeekOfYearMethodInfo DateTime signature where
        overloadedMethod = dateTimeGetWeekOfYear

    #endif

    -- method DateTime::get_year
    -- method type : OrdinaryMethod
    -- Args: [ Arg
    --           { argCName = "datetime"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "DateTime" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "A #GDateTime" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TBasicType TInt)
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_get_year" g_date_time_get_year ::
        Ptr DateTime ->                         -- datetime : TInterface (Name {namespace = "GLib", name = "DateTime"})
        IO Int32

    -- | Retrieves the year represented by /@datetime@/ in the Gregorian calendar.
    --
    -- /Since: 2.26/
    dateTimeGetYear ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        DateTime
        -- ^ /@datetime@/: A t'GI.GLib.Structs.DateTime.DateTime'
        -> m Int32
        -- ^ __Returns:__ the year represented by /@datetime@/
    dateTimeGetYear :: DateTime -> m Int32
    dateTimeGetYear datetime :: DateTime
    datetime = IO Int32 -> m Int32
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO Int32 -> m Int32) -> IO Int32 -> m Int32
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr DateTime
    datetime' <- DateTime -> IO (Ptr DateTime)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr DateTime
    datetime
        Int32
    result <- Ptr DateTime -> IO Int32
    g_date_time_get_year Ptr DateTime
    datetime'
        DateTime -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr DateTime
    datetime
        Int32 -> IO Int32
    forall (m :: * -> *) a. Monad m => a -> m a
    return Int32
    result

    #if defined(ENABLE_OVERLOADING)
    data DateTimeGetYearMethodInfo
    instance (signature ~ (m Int32), MonadIO m) => O.MethodInfo DateTimeGetYearMethodInfo DateTime signature where
        overloadedMethod = dateTimeGetYear

    #endif

    -- method DateTime::get_ymd
    -- method type : OrdinaryMethod
    -- Args: [ Arg
    --           { argCName = "datetime"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "DateTime" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GDateTime." , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       , Arg
    --           { argCName = "year"
    --           , argType = TBasicType TInt
    --           , direction = DirectionOut
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText =
    --                     Just "the return location for the gregorian year, or %NULL."
    --                 , sinceVersion = Nothing
    --                 }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferEverything
    --           }
    --       , Arg
    --           { argCName = "month"
    --           , argType = TBasicType TInt
    --           , direction = DirectionOut
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText =
    --                     Just "the return location for the month of the year, or %NULL."
    --                 , sinceVersion = Nothing
    --                 }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferEverything
    --           }
    --       , Arg
    --           { argCName = "day"
    --           , argType = TBasicType TInt
    --           , direction = DirectionOut
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText =
    --                     Just "the return location for the day of the month, or %NULL."
    --                 , sinceVersion = Nothing
    --                 }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferEverything
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Nothing
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_get_ymd" g_date_time_get_ymd ::
        Ptr DateTime ->                         -- datetime : TInterface (Name {namespace = "GLib", name = "DateTime"})
        Ptr Int32 ->                            -- year : TBasicType TInt
        Ptr Int32 ->                            -- month : TBasicType TInt
        Ptr Int32 ->                            -- day : TBasicType TInt
        IO ()

    -- | Retrieves the Gregorian day, month, and year of a given t'GI.GLib.Structs.DateTime.DateTime'.
    --
    -- /Since: 2.26/
    dateTimeGetYmd ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        DateTime
        -- ^ /@datetime@/: a t'GI.GLib.Structs.DateTime.DateTime'.
        -> m ((Int32, Int32, Int32))
    dateTimeGetYmd :: DateTime -> m (Int32, Int32, Int32)
    dateTimeGetYmd datetime :: DateTime
    datetime = IO (Int32, Int32, Int32) -> m (Int32, Int32, Int32)
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO (Int32, Int32, Int32) -> m (Int32, Int32, Int32))
    -> IO (Int32, Int32, Int32) -> m (Int32, Int32, Int32)
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr DateTime
    datetime' <- DateTime -> IO (Ptr DateTime)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr DateTime
    datetime
        Ptr Int32
    year <- IO (Ptr Int32)
    forall a. Storable a => IO (Ptr a)
    allocMem :: IO (Ptr Int32)
        Ptr Int32
    month <- IO (Ptr Int32)
    forall a. Storable a => IO (Ptr a)
    allocMem :: IO (Ptr Int32)
        Ptr Int32
    day <- IO (Ptr Int32)
    forall a. Storable a => IO (Ptr a)
    allocMem :: IO (Ptr Int32)
        Ptr DateTime -> Ptr Int32 -> Ptr Int32 -> Ptr Int32 -> IO ()
    g_date_time_get_ymd Ptr DateTime
    datetime' Ptr Int32
    year Ptr Int32
    month Ptr Int32
    day
        Int32
    year' <- Ptr Int32 -> IO Int32
    forall a. Storable a => Ptr a -> IO a
    peek Ptr Int32
    year
        Int32
    month' <- Ptr Int32 -> IO Int32
    forall a. Storable a => Ptr a -> IO a
    peek Ptr Int32
    month
        Int32
    day' <- Ptr Int32 -> IO Int32
    forall a. Storable a => Ptr a -> IO a
    peek Ptr Int32
    day
        DateTime -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr DateTime
    datetime
        Ptr Int32 -> IO ()
    forall a. Ptr a -> IO ()
    freeMem Ptr Int32
    year
        Ptr Int32 -> IO ()
    forall a. Ptr a -> IO ()
    freeMem Ptr Int32
    month
        Ptr Int32 -> IO ()
    forall a. Ptr a -> IO ()
    freeMem Ptr Int32
    day
        (Int32, Int32, Int32) -> IO (Int32, Int32, Int32)
    forall (m :: * -> *) a. Monad m => a -> m a
    return (Int32
    year', Int32
    month', Int32
    day')

    #if defined(ENABLE_OVERLOADING)
    data DateTimeGetYmdMethodInfo
    instance (signature ~ (m ((Int32, Int32, Int32))), MonadIO m) => O.MethodInfo DateTimeGetYmdMethodInfo DateTime signature where
        overloadedMethod = dateTimeGetYmd

    #endif

    -- method DateTime::is_daylight_savings
    -- method type : OrdinaryMethod
    -- Args: [ Arg
    --           { argCName = "datetime"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "DateTime" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GDateTime" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TBasicType TBoolean)
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_is_daylight_savings" g_date_time_is_daylight_savings ::
        Ptr DateTime ->                         -- datetime : TInterface (Name {namespace = "GLib", name = "DateTime"})
        IO CInt

    -- | Determines if daylight savings time is in effect at the time and in
    -- the time zone of /@datetime@/.
    --
    -- /Since: 2.26/
    dateTimeIsDaylightSavings ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        DateTime
        -- ^ /@datetime@/: a t'GI.GLib.Structs.DateTime.DateTime'
        -> m Bool
        -- ^ __Returns:__ 'P.True' if daylight savings time is in effect
    dateTimeIsDaylightSavings :: DateTime -> m Bool
    dateTimeIsDaylightSavings datetime :: DateTime
    datetime = IO Bool -> m Bool
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO Bool -> m Bool) -> IO Bool -> m Bool
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr DateTime
    datetime' <- DateTime -> IO (Ptr DateTime)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr DateTime
    datetime
        CInt
    result <- Ptr DateTime -> IO CInt
    g_date_time_is_daylight_savings Ptr DateTime
    datetime'
        let result' :: Bool
    result' = (CInt -> CInt -> Bool
    forall a. Eq a => a -> a -> Bool
    /= 0) CInt
    result
        DateTime -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr DateTime
    datetime
        Bool -> IO Bool
    forall (m :: * -> *) a. Monad m => a -> m a
    return Bool
    result'

    #if defined(ENABLE_OVERLOADING)
    data DateTimeIsDaylightSavingsMethodInfo
    instance (signature ~ (m Bool), MonadIO m) => O.MethodInfo DateTimeIsDaylightSavingsMethodInfo DateTime signature where
        overloadedMethod = dateTimeIsDaylightSavings

    #endif

    -- method DateTime::ref
    -- method type : OrdinaryMethod
    -- Args: [ Arg
    --           { argCName = "datetime"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "DateTime" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GDateTime" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TInterface Name { namespace = "GLib" , name = "DateTime" })
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_ref" g_date_time_ref ::
        Ptr DateTime ->                         -- datetime : TInterface (Name {namespace = "GLib", name = "DateTime"})
        IO (Ptr DateTime)

    -- | Atomically increments the reference count of /@datetime@/ by one.
    --
    -- /Since: 2.26/
    dateTimeRef ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        DateTime
        -- ^ /@datetime@/: a t'GI.GLib.Structs.DateTime.DateTime'
        -> m DateTime
        -- ^ __Returns:__ the t'GI.GLib.Structs.DateTime.DateTime' with the reference count increased
    dateTimeRef :: DateTime -> m DateTime
    dateTimeRef datetime :: DateTime
    datetime = IO DateTime -> m DateTime
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO DateTime -> m DateTime) -> IO DateTime -> m DateTime
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr DateTime
    datetime' <- DateTime -> IO (Ptr DateTime)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr DateTime
    datetime
        Ptr DateTime
    result <- Ptr DateTime -> IO (Ptr DateTime)
    g_date_time_ref Ptr DateTime
    datetime'
        Text -> Ptr DateTime -> IO ()
    forall a. HasCallStack => Text -> Ptr a -> IO ()
    checkUnexpectedReturnNULL "dateTimeRef" Ptr DateTime
    result
        DateTime
    result' <- ((ManagedPtr DateTime -> DateTime) -> Ptr DateTime -> IO DateTime
    forall a.
    (HasCallStack, GBoxed a) =>
    (ManagedPtr a -> a) -> Ptr a -> IO a
    wrapBoxed ManagedPtr DateTime -> DateTime
    DateTime) Ptr DateTime
    result
        DateTime -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr DateTime
    datetime
        DateTime -> IO DateTime
    forall (m :: * -> *) a. Monad m => a -> m a
    return DateTime
    result'

    #if defined(ENABLE_OVERLOADING)
    data DateTimeRefMethodInfo
    instance (signature ~ (m DateTime), MonadIO m) => O.MethodInfo DateTimeRefMethodInfo DateTime signature where
        overloadedMethod = dateTimeRef

    #endif

    -- method DateTime::to_local
    -- method type : OrdinaryMethod
    -- Args: [ Arg
    --           { argCName = "datetime"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "DateTime" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GDateTime" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TInterface Name { namespace = "GLib" , name = "DateTime" })
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_to_local" g_date_time_to_local ::
        Ptr DateTime ->                         -- datetime : TInterface (Name {namespace = "GLib", name = "DateTime"})
        IO (Ptr DateTime)

    -- | Creates a new t'GI.GLib.Structs.DateTime.DateTime' corresponding to the same instant in time as
    -- /@datetime@/, but in the local time zone.
    --
    -- This call is equivalent to calling 'GI.GLib.Structs.DateTime.dateTimeToTimezone' with the
    -- time zone returned by 'GI.GLib.Structs.TimeZone.timeZoneNewLocal'.
    --
    -- /Since: 2.26/
    dateTimeToLocal ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        DateTime
        -- ^ /@datetime@/: a t'GI.GLib.Structs.DateTime.DateTime'
        -> m (Maybe DateTime)
        -- ^ __Returns:__ the newly created t'GI.GLib.Structs.DateTime.DateTime' which
        --   should be freed with 'GI.GLib.Structs.DateTime.dateTimeUnref', or 'P.Nothing'
    dateTimeToLocal :: DateTime -> m (Maybe DateTime)
    dateTimeToLocal datetime :: DateTime
    datetime = IO (Maybe DateTime) -> m (Maybe DateTime)
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO (Maybe DateTime) -> m (Maybe DateTime))
    -> IO (Maybe DateTime) -> m (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr DateTime
    datetime' <- DateTime -> IO (Ptr DateTime)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr DateTime
    datetime
        Ptr DateTime
    result <- Ptr DateTime -> IO (Ptr DateTime)
    g_date_time_to_local Ptr DateTime
    datetime'
        Maybe DateTime
    maybeResult <- Ptr DateTime
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. Ptr a -> (Ptr a -> IO b) -> IO (Maybe b)
    convertIfNonNull Ptr DateTime
    result ((Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime))
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ \result' :: Ptr DateTime
    result' -> do
            DateTime
    result'' <- ((ManagedPtr DateTime -> DateTime) -> Ptr DateTime -> IO DateTime
    forall a.
    (HasCallStack, GBoxed a) =>
    (ManagedPtr a -> a) -> Ptr a -> IO a
    wrapBoxed ManagedPtr DateTime -> DateTime
    DateTime) Ptr DateTime
    result'
            DateTime -> IO DateTime
    forall (m :: * -> *) a. Monad m => a -> m a
    return DateTime
    result''
        DateTime -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr DateTime
    datetime
        Maybe DateTime -> IO (Maybe DateTime)
    forall (m :: * -> *) a. Monad m => a -> m a
    return Maybe DateTime
    maybeResult

    #if defined(ENABLE_OVERLOADING)
    data DateTimeToLocalMethodInfo
    instance (signature ~ (m (Maybe DateTime)), MonadIO m) => O.MethodInfo DateTimeToLocalMethodInfo DateTime signature where
        overloadedMethod = dateTimeToLocal

    #endif

    -- method DateTime::to_timeval
    -- method type : OrdinaryMethod
    -- Args: [ Arg
    --           { argCName = "datetime"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "DateTime" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GDateTime" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       , Arg
    --           { argCName = "tv"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "TimeVal" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GTimeVal to modify"
    --                 , sinceVersion = Nothing
    --                 }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TBasicType TBoolean)
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_to_timeval" g_date_time_to_timeval ::
        Ptr DateTime ->                         -- datetime : TInterface (Name {namespace = "GLib", name = "DateTime"})
        Ptr GLib.TimeVal.TimeVal ->             -- tv : TInterface (Name {namespace = "GLib", name = "TimeVal"})
        IO CInt

    {-# DEPRECATED dateTimeToTimeval ["(Since version 2.62)","t'GI.GLib.Structs.TimeVal.TimeVal' is not year-2038-safe. Use","   'GI.GLib.Structs.DateTime.dateTimeToUnix' instead."] #-}
    -- | Stores the instant in time that /@datetime@/ represents into /@tv@/.
    --
    -- The time contained in a t'GI.GLib.Structs.TimeVal.TimeVal' is always stored in the form of
    -- seconds elapsed since 1970-01-01 00:00:00 UTC, regardless of the time
    -- zone associated with /@datetime@/.
    --
    -- On systems where \'long\' is 32bit (ie: all 32bit systems and all
    -- Windows systems), a t'GI.GLib.Structs.TimeVal.TimeVal' is incapable of storing the entire
    -- range of values that t'GI.GLib.Structs.DateTime.DateTime' is capable of expressing.  On those
    -- systems, this function returns 'P.False' to indicate that the time is
    -- out of range.
    --
    -- On systems where \'long\' is 64bit, this function never fails.
    --
    -- /Since: 2.26/
    dateTimeToTimeval ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        DateTime
        -- ^ /@datetime@/: a t'GI.GLib.Structs.DateTime.DateTime'
        -> GLib.TimeVal.TimeVal
        -- ^ /@tv@/: a t'GI.GLib.Structs.TimeVal.TimeVal' to modify
        -> m Bool
        -- ^ __Returns:__ 'P.True' if successful, else 'P.False'
    dateTimeToTimeval :: DateTime -> TimeVal -> m Bool
    dateTimeToTimeval datetime :: DateTime
    datetime tv :: TimeVal
    tv = IO Bool -> m Bool
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO Bool -> m Bool) -> IO Bool -> m Bool
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr DateTime
    datetime' <- DateTime -> IO (Ptr DateTime)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr DateTime
    datetime
        Ptr TimeVal
    tv' <- TimeVal -> IO (Ptr TimeVal)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr TimeVal
    tv
        CInt
    result <- Ptr DateTime -> Ptr TimeVal -> IO CInt
    g_date_time_to_timeval Ptr DateTime
    datetime' Ptr TimeVal
    tv'
        let result' :: Bool
    result' = (CInt -> CInt -> Bool
    forall a. Eq a => a -> a -> Bool
    /= 0) CInt
    result
        DateTime -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr DateTime
    datetime
        TimeVal -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr TimeVal
    tv
        Bool -> IO Bool
    forall (m :: * -> *) a. Monad m => a -> m a
    return Bool
    result'

    #if defined(ENABLE_OVERLOADING)
    data DateTimeToTimevalMethodInfo
    instance (signature ~ (GLib.TimeVal.TimeVal -> m Bool), MonadIO m) => O.MethodInfo DateTimeToTimevalMethodInfo DateTime signature where
        overloadedMethod = dateTimeToTimeval

    #endif

    -- method DateTime::to_timezone
    -- method type : OrdinaryMethod
    -- Args: [ Arg
    --           { argCName = "datetime"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "DateTime" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GDateTime" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       , Arg
    --           { argCName = "tz"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "TimeZone" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "the new #GTimeZone" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TInterface Name { namespace = "GLib" , name = "DateTime" })
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_to_timezone" g_date_time_to_timezone ::
        Ptr DateTime ->                         -- datetime : TInterface (Name {namespace = "GLib", name = "DateTime"})
        Ptr GLib.TimeZone.TimeZone ->           -- tz : TInterface (Name {namespace = "GLib", name = "TimeZone"})
        IO (Ptr DateTime)

    -- | Create a new t'GI.GLib.Structs.DateTime.DateTime' corresponding to the same instant in time as
    -- /@datetime@/, but in the time zone /@tz@/.
    --
    -- This call can fail in the case that the time goes out of bounds.  For
    -- example, converting 0001-01-01 00:00:00 UTC to a time zone west of
    -- Greenwich will fail (due to the year 0 being out of range).
    --
    -- /Since: 2.26/
    dateTimeToTimezone ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        DateTime
        -- ^ /@datetime@/: a t'GI.GLib.Structs.DateTime.DateTime'
        -> GLib.TimeZone.TimeZone
        -- ^ /@tz@/: the new t'GI.GLib.Structs.TimeZone.TimeZone'
        -> m (Maybe DateTime)
        -- ^ __Returns:__ the newly created t'GI.GLib.Structs.DateTime.DateTime' which
        --   should be freed with 'GI.GLib.Structs.DateTime.dateTimeUnref', or 'P.Nothing'
    dateTimeToTimezone :: DateTime -> TimeZone -> m (Maybe DateTime)
    dateTimeToTimezone datetime :: DateTime
    datetime tz :: TimeZone
    tz = IO (Maybe DateTime) -> m (Maybe DateTime)
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO (Maybe DateTime) -> m (Maybe DateTime))
    -> IO (Maybe DateTime) -> m (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr DateTime
    datetime' <- DateTime -> IO (Ptr DateTime)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr DateTime
    datetime
        Ptr TimeZone
    tz' <- TimeZone -> IO (Ptr TimeZone)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr TimeZone
    tz
        Ptr DateTime
    result <- Ptr DateTime -> Ptr TimeZone -> IO (Ptr DateTime)
    g_date_time_to_timezone Ptr DateTime
    datetime' Ptr TimeZone
    tz'
        Maybe DateTime
    maybeResult <- Ptr DateTime
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. Ptr a -> (Ptr a -> IO b) -> IO (Maybe b)
    convertIfNonNull Ptr DateTime
    result ((Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime))
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ \result' :: Ptr DateTime
    result' -> do
            DateTime
    result'' <- ((ManagedPtr DateTime -> DateTime) -> Ptr DateTime -> IO DateTime
    forall a.
    (HasCallStack, GBoxed a) =>
    (ManagedPtr a -> a) -> Ptr a -> IO a
    wrapBoxed ManagedPtr DateTime -> DateTime
    DateTime) Ptr DateTime
    result'
            DateTime -> IO DateTime
    forall (m :: * -> *) a. Monad m => a -> m a
    return DateTime
    result''
        DateTime -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr DateTime
    datetime
        TimeZone -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr TimeZone
    tz
        Maybe DateTime -> IO (Maybe DateTime)
    forall (m :: * -> *) a. Monad m => a -> m a
    return Maybe DateTime
    maybeResult

    #if defined(ENABLE_OVERLOADING)
    data DateTimeToTimezoneMethodInfo
    instance (signature ~ (GLib.TimeZone.TimeZone -> m (Maybe DateTime)), MonadIO m) => O.MethodInfo DateTimeToTimezoneMethodInfo DateTime signature where
        overloadedMethod = dateTimeToTimezone

    #endif

    -- method DateTime::to_unix
    -- method type : OrdinaryMethod
    -- Args: [ Arg
    --           { argCName = "datetime"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "DateTime" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GDateTime" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TBasicType TInt64)
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_to_unix" g_date_time_to_unix ::
        Ptr DateTime ->                         -- datetime : TInterface (Name {namespace = "GLib", name = "DateTime"})
        IO Int64

    -- | Gives the Unix time corresponding to /@datetime@/, rounding down to the
    -- nearest second.
    --
    -- Unix time is the number of seconds that have elapsed since 1970-01-01
    -- 00:00:00 UTC, regardless of the time zone associated with /@datetime@/.
    --
    -- /Since: 2.26/
    dateTimeToUnix ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        DateTime
        -- ^ /@datetime@/: a t'GI.GLib.Structs.DateTime.DateTime'
        -> m Int64
        -- ^ __Returns:__ the Unix time corresponding to /@datetime@/
    dateTimeToUnix :: DateTime -> m Int64
    dateTimeToUnix datetime :: DateTime
    datetime = IO Int64 -> m Int64
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO Int64 -> m Int64) -> IO Int64 -> m Int64
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr DateTime
    datetime' <- DateTime -> IO (Ptr DateTime)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr DateTime
    datetime
        Int64
    result <- Ptr DateTime -> IO Int64
    g_date_time_to_unix Ptr DateTime
    datetime'
        DateTime -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr DateTime
    datetime
        Int64 -> IO Int64
    forall (m :: * -> *) a. Monad m => a -> m a
    return Int64
    result

    #if defined(ENABLE_OVERLOADING)
    data DateTimeToUnixMethodInfo
    instance (signature ~ (m Int64), MonadIO m) => O.MethodInfo DateTimeToUnixMethodInfo DateTime signature where
        overloadedMethod = dateTimeToUnix

    #endif

    -- method DateTime::to_utc
    -- method type : OrdinaryMethod
    -- Args: [ Arg
    --           { argCName = "datetime"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "DateTime" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GDateTime" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TInterface Name { namespace = "GLib" , name = "DateTime" })
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_to_utc" g_date_time_to_utc ::
        Ptr DateTime ->                         -- datetime : TInterface (Name {namespace = "GLib", name = "DateTime"})
        IO (Ptr DateTime)

    -- | Creates a new t'GI.GLib.Structs.DateTime.DateTime' corresponding to the same instant in time as
    -- /@datetime@/, but in UTC.
    --
    -- This call is equivalent to calling 'GI.GLib.Structs.DateTime.dateTimeToTimezone' with the
    -- time zone returned by 'GI.GLib.Structs.TimeZone.timeZoneNewUtc'.
    --
    -- /Since: 2.26/
    dateTimeToUtc ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        DateTime
        -- ^ /@datetime@/: a t'GI.GLib.Structs.DateTime.DateTime'
        -> m (Maybe DateTime)
        -- ^ __Returns:__ the newly created t'GI.GLib.Structs.DateTime.DateTime' which
        --   should be freed with 'GI.GLib.Structs.DateTime.dateTimeUnref', or 'P.Nothing'
    dateTimeToUtc :: DateTime -> m (Maybe DateTime)
    dateTimeToUtc datetime :: DateTime
    datetime = IO (Maybe DateTime) -> m (Maybe DateTime)
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO (Maybe DateTime) -> m (Maybe DateTime))
    -> IO (Maybe DateTime) -> m (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr DateTime
    datetime' <- DateTime -> IO (Ptr DateTime)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr DateTime
    datetime
        Ptr DateTime
    result <- Ptr DateTime -> IO (Ptr DateTime)
    g_date_time_to_utc Ptr DateTime
    datetime'
        Maybe DateTime
    maybeResult <- Ptr DateTime
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. Ptr a -> (Ptr a -> IO b) -> IO (Maybe b)
    convertIfNonNull Ptr DateTime
    result ((Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime))
    -> (Ptr DateTime -> IO DateTime) -> IO (Maybe DateTime)
    forall a b. (a -> b) -> a -> b
    $ \result' :: Ptr DateTime
    result' -> do
            DateTime
    result'' <- ((ManagedPtr DateTime -> DateTime) -> Ptr DateTime -> IO DateTime
    forall a.
    (HasCallStack, GBoxed a) =>
    (ManagedPtr a -> a) -> Ptr a -> IO a
    wrapBoxed ManagedPtr DateTime -> DateTime
    DateTime) Ptr DateTime
    result'
            DateTime -> IO DateTime
    forall (m :: * -> *) a. Monad m => a -> m a
    return DateTime
    result''
        DateTime -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr DateTime
    datetime
        Maybe DateTime -> IO (Maybe DateTime)
    forall (m :: * -> *) a. Monad m => a -> m a
    return Maybe DateTime
    maybeResult

    #if defined(ENABLE_OVERLOADING)
    data DateTimeToUtcMethodInfo
    instance (signature ~ (m (Maybe DateTime)), MonadIO m) => O.MethodInfo DateTimeToUtcMethodInfo DateTime signature where
        overloadedMethod = dateTimeToUtc

    #endif

    -- method DateTime::unref
    -- method type : OrdinaryMethod
    -- Args: [ Arg
    --           { argCName = "datetime"
    --           , argType =
    --               TInterface Name { namespace = "GLib" , name = "DateTime" }
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GDateTime" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Nothing
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_unref" g_date_time_unref ::
        Ptr DateTime ->                         -- datetime : TInterface (Name {namespace = "GLib", name = "DateTime"})
        IO ()

    -- | Atomically decrements the reference count of /@datetime@/ by one.
    --
    -- When the reference count reaches zero, the resources allocated by
    -- /@datetime@/ are freed
    --
    -- /Since: 2.26/
    dateTimeUnref ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        DateTime
        -- ^ /@datetime@/: a t'GI.GLib.Structs.DateTime.DateTime'
        -> m ()
    dateTimeUnref :: DateTime -> m ()
    dateTimeUnref datetime :: DateTime
    datetime = IO () -> m ()
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO () -> m ()) -> IO () -> m ()
    forall a b. (a -> b) -> a -> b
    $ do
        Ptr DateTime
    datetime' <- DateTime -> IO (Ptr DateTime)
    forall a. (HasCallStack, ManagedPtrNewtype a) => a -> IO (Ptr a)
    unsafeManagedPtrGetPtr DateTime
    datetime
        Ptr DateTime -> IO ()
    g_date_time_unref Ptr DateTime
    datetime'
        DateTime -> IO ()
    forall a. ManagedPtrNewtype a => a -> IO ()
    touchManagedPtr DateTime
    datetime
        () -> IO ()
    forall (m :: * -> *) a. Monad m => a -> m a
    return ()

    #if defined(ENABLE_OVERLOADING)
    data DateTimeUnrefMethodInfo
    instance (signature ~ (m ()), MonadIO m) => O.MethodInfo DateTimeUnrefMethodInfo DateTime signature where
        overloadedMethod = dateTimeUnref

    #endif

    -- method DateTime::compare
    -- method type : MemberFunction
    -- Args: [ Arg
    --           { argCName = "dt1"
    --           , argType = TBasicType TPtr
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "first #GDateTime to compare"
    --                 , sinceVersion = Nothing
    --                 }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       , Arg
    --           { argCName = "dt2"
    --           , argType = TBasicType TPtr
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "second #GDateTime to compare"
    --                 , sinceVersion = Nothing
    --                 }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TBasicType TInt)
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_compare" g_date_time_compare ::
        Ptr () ->                               -- dt1 : TBasicType TPtr
        Ptr () ->                               -- dt2 : TBasicType TPtr
        IO Int32

    -- | A comparison function for @/GDateTimes/@ that is suitable
    -- as a t'GI.GLib.Callbacks.CompareFunc'. Both @/GDateTimes/@ must be non-'P.Nothing'.
    --
    -- /Since: 2.26/
    dateTimeCompare ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        Ptr ()
        -- ^ /@dt1@/: first t'GI.GLib.Structs.DateTime.DateTime' to compare
        -> Ptr ()
        -- ^ /@dt2@/: second t'GI.GLib.Structs.DateTime.DateTime' to compare
        -> m Int32
        -- ^ __Returns:__ -1, 0 or 1 if /@dt1@/ is less than, equal to or greater
        --   than /@dt2@/.
    dateTimeCompare :: Ptr () -> Ptr () -> m Int32
    dateTimeCompare dt1 :: Ptr ()
    dt1 dt2 :: Ptr ()
    dt2 = IO Int32 -> m Int32
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO Int32 -> m Int32) -> IO Int32 -> m Int32
    forall a b. (a -> b) -> a -> b
    $ do
        Int32
    result <- Ptr () -> Ptr () -> IO Int32
    g_date_time_compare Ptr ()
    dt1 Ptr ()
    dt2
        Int32 -> IO Int32
    forall (m :: * -> *) a. Monad m => a -> m a
    return Int32
    result

    #if defined(ENABLE_OVERLOADING)
    #endif

    -- method DateTime::equal
    -- method type : MemberFunction
    -- Args: [ Arg
    --           { argCName = "dt1"
    --           , argType = TBasicType TPtr
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GDateTime" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       , Arg
    --           { argCName = "dt2"
    --           , argType = TBasicType TPtr
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GDateTime" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TBasicType TBoolean)
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_equal" g_date_time_equal ::
        Ptr () ->                               -- dt1 : TBasicType TPtr
        Ptr () ->                               -- dt2 : TBasicType TPtr
        IO CInt

    -- | Checks to see if /@dt1@/ and /@dt2@/ are equal.
    --
    -- Equal here means that they represent the same moment after converting
    -- them to the same time zone.
    --
    -- /Since: 2.26/
    dateTimeEqual ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        Ptr ()
        -- ^ /@dt1@/: a t'GI.GLib.Structs.DateTime.DateTime'
        -> Ptr ()
        -- ^ /@dt2@/: a t'GI.GLib.Structs.DateTime.DateTime'
        -> m Bool
        -- ^ __Returns:__ 'P.True' if /@dt1@/ and /@dt2@/ are equal
    dateTimeEqual :: Ptr () -> Ptr () -> m Bool
    dateTimeEqual dt1 :: Ptr ()
    dt1 dt2 :: Ptr ()
    dt2 = IO Bool -> m Bool
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO Bool -> m Bool) -> IO Bool -> m Bool
    forall a b. (a -> b) -> a -> b
    $ do
        CInt
    result <- Ptr () -> Ptr () -> IO CInt
    g_date_time_equal Ptr ()
    dt1 Ptr ()
    dt2
        let result' :: Bool
    result' = (CInt -> CInt -> Bool
    forall a. Eq a => a -> a -> Bool
    /= 0) CInt
    result
        Bool -> IO Bool
    forall (m :: * -> *) a. Monad m => a -> m a
    return Bool
    result'

    #if defined(ENABLE_OVERLOADING)
    #endif

    -- method DateTime::hash
    -- method type : MemberFunction
    -- Args: [ Arg
    --           { argCName = "datetime"
    --           , argType = TBasicType TPtr
    --           , direction = DirectionIn
    --           , mayBeNull = False
    --           , argDoc =
    --               Documentation
    --                 { rawDocText = Just "a #GDateTime" , sinceVersion = Nothing }
    --           , argScope = ScopeTypeInvalid
    --           , argClosure = -1
    --           , argDestroy = -1
    --           , argCallerAllocates = False
    --           , transfer = TransferNothing
    --           }
    --       ]
    -- Lengths: []
    -- returnType: Just (TBasicType TUInt)
    -- throws : False
    -- Skip return : False

    foreign import ccall "g_date_time_hash" g_date_time_hash ::
        Ptr () ->                               -- datetime : TBasicType TPtr
        IO Word32

    -- | Hashes /@datetime@/ into a @/guint/@, suitable for use within t'GI.GLib.Structs.HashTable.HashTable'.
    --
    -- /Since: 2.26/
    dateTimeHash ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        Ptr ()
        -- ^ /@datetime@/: a t'GI.GLib.Structs.DateTime.DateTime'
        -> m Word32
        -- ^ __Returns:__ a @/guint/@ containing the hash
    dateTimeHash :: Ptr () -> m Word32
    dateTimeHash datetime :: Ptr ()
    datetime = IO Word32 -> m Word32
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO Word32 -> m Word32) -> IO Word32 -> m Word32
    forall a b. (a -> b) -> a -> b
    $ do
        Word32
    result <- Ptr () -> IO Word32
    g_date_time_hash Ptr ()
    datetime
        Word32 -> IO Word32
    forall (m :: * -> *) a. Monad m => a -> m a
    return Word32
    result

    #if defined(ENABLE_OVERLOADING)
    #endif

    #if defined(ENABLE_OVERLOADING)
    type family ResolveDateTimeMethod (t :: Symbol) (o :: *) :: * where
        ResolveDateTimeMethod "add" o = DateTimeAddMethodInfo
        ResolveDateTimeMethod "addDays" o = DateTimeAddDaysMethodInfo
        ResolveDateTimeMethod "addFull" o = DateTimeAddFullMethodInfo
        ResolveDateTimeMethod "addHours" o = DateTimeAddHoursMethodInfo
        ResolveDateTimeMethod "addMinutes" o = DateTimeAddMinutesMethodInfo
        ResolveDateTimeMethod "addMonths" o = DateTimeAddMonthsMethodInfo
        ResolveDateTimeMethod "addSeconds" o = DateTimeAddSecondsMethodInfo
        ResolveDateTimeMethod "addWeeks" o = DateTimeAddWeeksMethodInfo
        ResolveDateTimeMethod "addYears" o = DateTimeAddYearsMethodInfo
        ResolveDateTimeMethod "difference" o = DateTimeDifferenceMethodInfo
        ResolveDateTimeMethod "format" o = DateTimeFormatMethodInfo
        ResolveDateTimeMethod "formatIso8601" o = DateTimeFormatIso8601MethodInfo
        ResolveDateTimeMethod "isDaylightSavings" o = DateTimeIsDaylightSavingsMethodInfo
        ResolveDateTimeMethod "ref" o = DateTimeRefMethodInfo
        ResolveDateTimeMethod "toLocal" o = DateTimeToLocalMethodInfo
        ResolveDateTimeMethod "toTimeval" o = DateTimeToTimevalMethodInfo
        ResolveDateTimeMethod "toTimezone" o = DateTimeToTimezoneMethodInfo
        ResolveDateTimeMethod "toUnix" o = DateTimeToUnixMethodInfo
        ResolveDateTimeMethod "toUtc" o = DateTimeToUtcMethodInfo
        ResolveDateTimeMethod "unref" o = DateTimeUnrefMethodInfo
        ResolveDateTimeMethod "getDayOfMonth" o = DateTimeGetDayOfMonthMethodInfo
        ResolveDateTimeMethod "getDayOfWeek" o = DateTimeGetDayOfWeekMethodInfo
        ResolveDateTimeMethod "getDayOfYear" o = DateTimeGetDayOfYearMethodInfo
        ResolveDateTimeMethod "getHour" o = DateTimeGetHourMethodInfo
        ResolveDateTimeMethod "getMicrosecond" o = DateTimeGetMicrosecondMethodInfo
        ResolveDateTimeMethod "getMinute" o = DateTimeGetMinuteMethodInfo
        ResolveDateTimeMethod "getMonth" o = DateTimeGetMonthMethodInfo
        ResolveDateTimeMethod "getSecond" o = DateTimeGetSecondMethodInfo
        ResolveDateTimeMethod "getSeconds" o = DateTimeGetSecondsMethodInfo
        ResolveDateTimeMethod "getTimezone" o = DateTimeGetTimezoneMethodInfo
        ResolveDateTimeMethod "getTimezoneAbbreviation" o = DateTimeGetTimezoneAbbreviationMethodInfo
        ResolveDateTimeMethod "getUtcOffset" o = DateTimeGetUtcOffsetMethodInfo
        ResolveDateTimeMethod "getWeekNumberingYear" o = DateTimeGetWeekNumberingYearMethodInfo
        ResolveDateTimeMethod "getWeekOfYear" o = DateTimeGetWeekOfYearMethodInfo
        ResolveDateTimeMethod "getYear" o = DateTimeGetYearMethodInfo
        ResolveDateTimeMethod "getYmd" o = DateTimeGetYmdMethodInfo
        ResolveDateTimeMethod l o = O.MethodResolutionFailed l o

    instance (info ~ ResolveDateTimeMethod t DateTime, O.MethodInfo info DateTime p) => OL.IsLabel t (DateTime -> p) where
    #if MIN_VERSION_base(4,10,0)
        fromLabel = O.overloadedMethod @info
    #else
        fromLabel _ = O.overloadedMethod @info
    #endif

    #endif