    {- |
    Copyright  : Will Thompson, Iñaki García Etxebarria and Jonas Platte
    License    : LGPL-2.1
    Maintainer : Iñaki García Etxebarria (garetxe@gmail.com)

    @GDateTime@ is an opaque structure whose members
    cannot be accessed directly.

    /Since: 2.26/
    -}

    #define ENABLE_OVERLOADING \
           (!defined(__HADDOCK_VERSION__))

    module GI.GLib.Structs.DateTime
        (

    -- * Exported types
        DateTime(..)                            ,
        noDateTime                              ,

     -- * Methods
    -- ** add #method:add#

    #if ENABLE_OVERLOADING
        DateTimeAddMethodInfo                   ,
    #endif
        dateTimeAdd                             ,

    -- ** addDays #method:addDays#

    #if ENABLE_OVERLOADING
        DateTimeAddDaysMethodInfo               ,
    #endif
        dateTimeAddDays                         ,

    -- ** addFull #method:addFull#

    #if ENABLE_OVERLOADING
        DateTimeAddFullMethodInfo               ,
    #endif
        dateTimeAddFull                         ,

    -- ** addHours #method:addHours#

    #if ENABLE_OVERLOADING
        DateTimeAddHoursMethodInfo              ,
    #endif
        dateTimeAddHours                        ,

    -- ** addMinutes #method:addMinutes#

    #if ENABLE_OVERLOADING
        DateTimeAddMinutesMethodInfo            ,
    #endif
        dateTimeAddMinutes                      ,

    -- ** addMonths #method:addMonths#

    #if ENABLE_OVERLOADING
        DateTimeAddMonthsMethodInfo             ,
    #endif
        dateTimeAddMonths                       ,

    -- ** addSeconds #method:addSeconds#

    #if ENABLE_OVERLOADING
        DateTimeAddSecondsMethodInfo            ,
    #endif
        dateTimeAddSeconds                      ,

    -- ** addWeeks #method:addWeeks#

    #if ENABLE_OVERLOADING
        DateTimeAddWeeksMethodInfo              ,
    #endif
        dateTimeAddWeeks                        ,

    -- ** addYears #method:addYears#

    #if ENABLE_OVERLOADING
        DateTimeAddYearsMethodInfo              ,
    #endif
        dateTimeAddYears                        ,

    -- ** compare #method:compare#

        dateTimeCompare                         ,

    -- ** difference #method:difference#

    #if ENABLE_OVERLOADING
        DateTimeDifferenceMethodInfo            ,
    #endif
        dateTimeDifference                      ,

    -- ** equal #method:equal#

        dateTimeEqual                           ,

    -- ** format #method:format#

    #if ENABLE_OVERLOADING
        DateTimeFormatMethodInfo                ,
    #endif
        dateTimeFormat                          ,

    -- ** getDayOfMonth #method:getDayOfMonth#

    #if ENABLE_OVERLOADING
        DateTimeGetDayOfMonthMethodInfo         ,
    #endif
        dateTimeGetDayOfMonth                   ,

    -- ** getDayOfWeek #method:getDayOfWeek#

    #if ENABLE_OVERLOADING
        DateTimeGetDayOfWeekMethodInfo          ,
    #endif
        dateTimeGetDayOfWeek                    ,

    -- ** getDayOfYear #method:getDayOfYear#

    #if ENABLE_OVERLOADING
        DateTimeGetDayOfYearMethodInfo          ,
    #endif
        dateTimeGetDayOfYear                    ,

    -- ** getHour #method:getHour#

    #if ENABLE_OVERLOADING
        DateTimeGetHourMethodInfo               ,
    #endif
        dateTimeGetHour                         ,

    -- ** getMicrosecond #method:getMicrosecond#

    #if ENABLE_OVERLOADING
        DateTimeGetMicrosecondMethodInfo        ,
    #endif
        dateTimeGetMicrosecond                  ,

    -- ** getMinute #method:getMinute#

    #if ENABLE_OVERLOADING
        DateTimeGetMinuteMethodInfo             ,
    #endif
        dateTimeGetMinute                       ,

    -- ** getMonth #method:getMonth#

    #if ENABLE_OVERLOADING
        DateTimeGetMonthMethodInfo              ,
    #endif
        dateTimeGetMonth                        ,

    -- ** getSecond #method:getSecond#

    #if ENABLE_OVERLOADING
        DateTimeGetSecondMethodInfo             ,
    #endif
        dateTimeGetSecond                       ,

    -- ** getSeconds #method:getSeconds#

    #if ENABLE_OVERLOADING
        DateTimeGetSecondsMethodInfo            ,
    #endif
        dateTimeGetSeconds                      ,

    -- ** getTimezone #method:getTimezone#

    #if ENABLE_OVERLOADING
        DateTimeGetTimezoneMethodInfo           ,
    #endif
        dateTimeGetTimezone                     ,

    -- ** getTimezoneAbbreviation #method:getTimezoneAbbreviation#

    #if ENABLE_OVERLOADING
        DateTimeGetTimezoneAbbreviationMethodInfo,
    #endif
        dateTimeGetTimezoneAbbreviation         ,

    -- ** getUtcOffset #method:getUtcOffset#

    #if ENABLE_OVERLOADING
        DateTimeGetUtcOffsetMethodInfo          ,
    #endif
        dateTimeGetUtcOffset                    ,

    -- ** getWeekNumberingYear #method:getWeekNumberingYear#

    #if ENABLE_OVERLOADING
        DateTimeGetWeekNumberingYearMethodInfo  ,
    #endif
        dateTimeGetWeekNumberingYear            ,

    -- ** getWeekOfYear #method:getWeekOfYear#

    #if ENABLE_OVERLOADING
        DateTimeGetWeekOfYearMethodInfo         ,
    #endif
        dateTimeGetWeekOfYear                   ,

    -- ** getYear #method:getYear#

    #if ENABLE_OVERLOADING
        DateTimeGetYearMethodInfo               ,
    #endif
        dateTimeGetYear                         ,

    -- ** getYmd #method:getYmd#

    #if ENABLE_OVERLOADING
        DateTimeGetYmdMethodInfo                ,
    #endif
        dateTimeGetYmd                          ,

    -- ** hash #method:hash#

        dateTimeHash                            ,

    -- ** isDaylightSavings #method:isDaylightSavings#

    #if 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 ENABLE_OVERLOADING
        DateTimeRefMethodInfo                   ,
    #endif
        dateTimeRef                             ,

    -- ** toLocal #method:toLocal#

    #if ENABLE_OVERLOADING
        DateTimeToLocalMethodInfo               ,
    #endif
        dateTimeToLocal                         ,

    -- ** toTimeval #method:toTimeval#

    #if ENABLE_OVERLOADING
        DateTimeToTimevalMethodInfo             ,
    #endif
        dateTimeToTimeval                       ,

    -- ** toTimezone #method:toTimezone#

    #if ENABLE_OVERLOADING
        DateTimeToTimezoneMethodInfo            ,
    #endif
        dateTimeToTimezone                      ,

    -- ** toUnix #method:toUnix#

    #if ENABLE_OVERLOADING
        DateTimeToUnixMethodInfo                ,
    #endif
        dateTimeToUnix                          ,

    -- ** toUtc #method:toUtc#

    #if ENABLE_OVERLOADING
        DateTimeToUtcMethodInfo                 ,
    #endif
        dateTimeToUtc                           ,

    -- ** unref #method:unref#

    #if 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.ManagedPtr as B.ManagedPtr
    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.Text as T
    import qualified Data.ByteString.Char8 as B
    import qualified Data.Map as Map
    import qualified Foreign.Ptr as FP

    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 (ManagedPtr DateTime)
    foreign import ccall "g_date_time_get_type" c_g_date_time_get_type ::
        IO GType

    instance BoxedObject DateTime where
        boxedType _ = c_g_date_time_get_type

    -- | A convenience alias for `Nothing` :: `Maybe` `DateTime`.
    noDateTime :: Maybe DateTime
    noDateTime = Nothing

    #if 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 '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 '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 '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 DateTime
        {- ^ __Returns:__ a new 'GI.GLib.Structs.DateTime.DateTime', or 'Nothing' -}
    dateTimeNew tz year month day hour minute seconds = liftIO $ do
        tz' <- unsafeManagedPtrGetPtr tz
        let seconds' = realToFrac seconds
        result <- g_date_time_new tz' year month day hour minute seconds'
        checkUnexpectedReturnNULL "dateTimeNew" result
        result' <- (wrapBoxed DateTime) result
        touchManagedPtr tz
        return result'

    #if 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 '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.

    \<sep> is the separator and can be either \'T\', \'t\' or \' \'.

    \<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 '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 'GI.GLib.Structs.TimeZone.TimeZone' to use if the text doesn\'t contain a
                             timezone, or 'Nothing'. -}
        -> m (Maybe DateTime)
        {- ^ __Returns:__ a new 'GI.GLib.Structs.DateTime.DateTime', or 'Nothing' -}
    dateTimeNewFromIso8601 text defaultTz = liftIO $ do
        text' <- textToCString text
        maybeDefaultTz <- case defaultTz of
            Nothing -> return nullPtr
            Just jDefaultTz -> do
                jDefaultTz' <- unsafeManagedPtrGetPtr jDefaultTz
                return jDefaultTz'
        result <- g_date_time_new_from_iso8601 text' maybeDefaultTz
        maybeResult <- convertIfNonNull result $ \result' -> do
            result'' <- (wrapBoxed DateTime) result'
            return result''
        whenJust defaultTz touchManagedPtr
        freeMem text'
        return maybeResult

    #if 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)

    {- |
    Creates a 'GI.GLib.Structs.DateTime.DateTime' corresponding to the given 'GI.GLib.Structs.TimeVal.TimeVal' /@tv@/ in the
    local time zone.

    The time contained in a '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 'Nothing') if /@tv@/ represents a time outside
    of the supported range of '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 'GI.GLib.Structs.TimeVal.TimeVal' -}
        -> m DateTime
        {- ^ __Returns:__ a new 'GI.GLib.Structs.DateTime.DateTime', or 'Nothing' -}
    dateTimeNewFromTimevalLocal tv = liftIO $ do
        tv' <- unsafeManagedPtrGetPtr tv
        result <- g_date_time_new_from_timeval_local tv'
        checkUnexpectedReturnNULL "dateTimeNewFromTimevalLocal" result
        result' <- (wrapBoxed DateTime) result
        touchManagedPtr tv
        return result'

    #if 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)

    {- |
    Creates a 'GI.GLib.Structs.DateTime.DateTime' corresponding to the given 'GI.GLib.Structs.TimeVal.TimeVal' /@tv@/ in UTC.

    The time contained in a '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 'Nothing') if /@tv@/ represents a time outside
    of the supported range of '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 'GI.GLib.Structs.TimeVal.TimeVal' -}
        -> m DateTime
        {- ^ __Returns:__ a new 'GI.GLib.Structs.DateTime.DateTime', or 'Nothing' -}
    dateTimeNewFromTimevalUtc tv = liftIO $ do
        tv' <- unsafeManagedPtrGetPtr tv
        result <- g_date_time_new_from_timeval_utc tv'
        checkUnexpectedReturnNULL "dateTimeNewFromTimevalUtc" result
        result' <- (wrapBoxed DateTime) result
        touchManagedPtr tv
        return result'

    #if 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 '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 'Nothing') if /@t@/ represents a time outside
    of the supported range of '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 DateTime
        {- ^ __Returns:__ a new 'GI.GLib.Structs.DateTime.DateTime', or 'Nothing' -}
    dateTimeNewFromUnixLocal t = liftIO $ do
        result <- g_date_time_new_from_unix_local t
        checkUnexpectedReturnNULL "dateTimeNewFromUnixLocal" result
        result' <- (wrapBoxed DateTime) result
        return result'

    #if 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 '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 'Nothing') if /@t@/ represents a time outside
    of the supported range of '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 DateTime
        {- ^ __Returns:__ a new 'GI.GLib.Structs.DateTime.DateTime', or 'Nothing' -}
    dateTimeNewFromUnixUtc t = liftIO $ do
        result <- g_date_time_new_from_unix_utc t
        checkUnexpectedReturnNULL "dateTimeNewFromUnixUtc" result
        result' <- (wrapBoxed DateTime) result
        return result'

    #if 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 '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 DateTime
        {- ^ __Returns:__ a 'GI.GLib.Structs.DateTime.DateTime', or 'Nothing' -}
    dateTimeNewLocal year month day hour minute seconds = liftIO $ do
        let seconds' = realToFrac seconds
        result <- g_date_time_new_local year month day hour minute seconds'
        checkUnexpectedReturnNULL "dateTimeNewLocal" result
        result' <- (wrapBoxed DateTime) result
        return result'

    #if 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 '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 the system clock is set to
    truly insane values (or 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 'GI.GLib.Structs.TimeZone.TimeZone' -}
        -> m DateTime
        {- ^ __Returns:__ a new 'GI.GLib.Structs.DateTime.DateTime', or 'Nothing' -}
    dateTimeNewNow tz = liftIO $ do
        tz' <- unsafeManagedPtrGetPtr tz
        result <- g_date_time_new_now tz'
        checkUnexpectedReturnNULL "dateTimeNewNow" result
        result' <- (wrapBoxed DateTime) result
        touchManagedPtr tz
        return result'

    #if 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 '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 DateTime
        {- ^ __Returns:__ a new 'GI.GLib.Structs.DateTime.DateTime', or 'Nothing' -}
    dateTimeNewNowLocal  = liftIO $ do
        result <- g_date_time_new_now_local
        checkUnexpectedReturnNULL "dateTimeNewNowLocal" result
        result' <- (wrapBoxed DateTime) result
        return result'

    #if 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 '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 DateTime
        {- ^ __Returns:__ a new 'GI.GLib.Structs.DateTime.DateTime', or 'Nothing' -}
    dateTimeNewNowUtc  = liftIO $ do
        result <- g_date_time_new_now_utc
        checkUnexpectedReturnNULL "dateTimeNewNowUtc" result
        result' <- (wrapBoxed DateTime) result
        return result'

    #if 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 '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 DateTime
        {- ^ __Returns:__ a 'GI.GLib.Structs.DateTime.DateTime', or 'Nothing' -}
    dateTimeNewUtc year month day hour minute seconds = liftIO $ do
        let seconds' = realToFrac seconds
        result <- g_date_time_new_utc year month day hour minute seconds'
        checkUnexpectedReturnNULL "dateTimeNewUtc" result
        result' <- (wrapBoxed DateTime) result
        return result'

    #if 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 'GI.GLib.Structs.DateTime.DateTime' -}
        -> Int64
        {- ^ /@timespan@/: a @/GTimeSpan/@ -}
        -> m DateTime
        {- ^ __Returns:__ the newly created 'GI.GLib.Structs.DateTime.DateTime' which should be freed with
      'GI.GLib.Structs.DateTime.dateTimeUnref'. -}
    dateTimeAdd datetime timespan = liftIO $ do
        datetime' <- unsafeManagedPtrGetPtr datetime
        result <- g_date_time_add datetime' timespan
        checkUnexpectedReturnNULL "dateTimeAdd" result
        result' <- (wrapBoxed DateTime) result
        touchManagedPtr datetime
        return result'

    #if ENABLE_OVERLOADING
    data DateTimeAddMethodInfo
    instance (signature ~ (Int64 -> m 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 'GI.GLib.Structs.DateTime.DateTime' -}
        -> Int32
        {- ^ /@days@/: the number of days -}
        -> m DateTime
        {- ^ __Returns:__ the newly created 'GI.GLib.Structs.DateTime.DateTime' which should be freed with
      'GI.GLib.Structs.DateTime.dateTimeUnref'. -}
    dateTimeAddDays datetime days = liftIO $ do
        datetime' <- unsafeManagedPtrGetPtr datetime
        result <- g_date_time_add_days datetime' days
        checkUnexpectedReturnNULL "dateTimeAddDays" result
        result' <- (wrapBoxed DateTime) result
        touchManagedPtr datetime
        return result'

    #if ENABLE_OVERLOADING
    data DateTimeAddDaysMethodInfo
    instance (signature ~ (Int32 -> m 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 '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 '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 DateTime
        {- ^ __Returns:__ the newly created 'GI.GLib.Structs.DateTime.DateTime' that should be freed with
      'GI.GLib.Structs.DateTime.dateTimeUnref'. -}
    dateTimeAddFull datetime years months days hours minutes seconds = liftIO $ do
        datetime' <- unsafeManagedPtrGetPtr datetime
        let seconds' = realToFrac seconds
        result <- g_date_time_add_full datetime' years months days hours minutes seconds'
        checkUnexpectedReturnNULL "dateTimeAddFull" result
        result' <- (wrapBoxed DateTime) result
        touchManagedPtr datetime
        return result'

    #if ENABLE_OVERLOADING
    data DateTimeAddFullMethodInfo
    instance (signature ~ (Int32 -> Int32 -> Int32 -> Int32 -> Int32 -> Double -> m 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 'GI.GLib.Structs.DateTime.DateTime' -}
        -> Int32
        {- ^ /@hours@/: the number of hours to add -}
        -> m DateTime
        {- ^ __Returns:__ the newly created 'GI.GLib.Structs.DateTime.DateTime' which should be freed with
      'GI.GLib.Structs.DateTime.dateTimeUnref'. -}
    dateTimeAddHours datetime hours = liftIO $ do
        datetime' <- unsafeManagedPtrGetPtr datetime
        result <- g_date_time_add_hours datetime' hours
        checkUnexpectedReturnNULL "dateTimeAddHours" result
        result' <- (wrapBoxed DateTime) result
        touchManagedPtr datetime
        return result'

    #if ENABLE_OVERLOADING
    data DateTimeAddHoursMethodInfo
    instance (signature ~ (Int32 -> m 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 'GI.GLib.Structs.DateTime.DateTime' -}
        -> Int32
        {- ^ /@minutes@/: the number of minutes to add -}
        -> m DateTime
        {- ^ __Returns:__ the newly created 'GI.GLib.Structs.DateTime.DateTime' which should be freed with
      'GI.GLib.Structs.DateTime.dateTimeUnref'. -}
    dateTimeAddMinutes datetime minutes = liftIO $ do
        datetime' <- unsafeManagedPtrGetPtr datetime
        result <- g_date_time_add_minutes datetime' minutes
        checkUnexpectedReturnNULL "dateTimeAddMinutes" result
        result' <- (wrapBoxed DateTime) result
        touchManagedPtr datetime
        return result'

    #if ENABLE_OVERLOADING
    data DateTimeAddMinutesMethodInfo
    instance (signature ~ (Int32 -> m 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 '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 'GI.GLib.Structs.DateTime.DateTime' -}
        -> Int32
        {- ^ /@months@/: the number of months -}
        -> m DateTime
        {- ^ __Returns:__ the newly created 'GI.GLib.Structs.DateTime.DateTime' which should be freed with
      'GI.GLib.Structs.DateTime.dateTimeUnref'. -}
    dateTimeAddMonths datetime months = liftIO $ do
        datetime' <- unsafeManagedPtrGetPtr datetime
        result <- g_date_time_add_months datetime' months
        checkUnexpectedReturnNULL "dateTimeAddMonths" result
        result' <- (wrapBoxed DateTime) result
        touchManagedPtr datetime
        return result'

    #if ENABLE_OVERLOADING
    data DateTimeAddMonthsMethodInfo
    instance (signature ~ (Int32 -> m 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 'GI.GLib.Structs.DateTime.DateTime' -}
        -> Double
        {- ^ /@seconds@/: the number of seconds to add -}
        -> m DateTime
        {- ^ __Returns:__ the newly created 'GI.GLib.Structs.DateTime.DateTime' which should be freed with
      'GI.GLib.Structs.DateTime.dateTimeUnref'. -}
    dateTimeAddSeconds datetime seconds = liftIO $ do
        datetime' <- unsafeManagedPtrGetPtr datetime
        let seconds' = realToFrac seconds
        result <- g_date_time_add_seconds datetime' seconds'
        checkUnexpectedReturnNULL "dateTimeAddSeconds" result
        result' <- (wrapBoxed DateTime) result
        touchManagedPtr datetime
        return result'

    #if ENABLE_OVERLOADING
    data DateTimeAddSecondsMethodInfo
    instance (signature ~ (Double -> m 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 'GI.GLib.Structs.DateTime.DateTime' -}
        -> Int32
        {- ^ /@weeks@/: the number of weeks -}
        -> m DateTime
        {- ^ __Returns:__ the newly created 'GI.GLib.Structs.DateTime.DateTime' which should be freed with
      'GI.GLib.Structs.DateTime.dateTimeUnref'. -}
    dateTimeAddWeeks datetime weeks = liftIO $ do
        datetime' <- unsafeManagedPtrGetPtr datetime
        result <- g_date_time_add_weeks datetime' weeks
        checkUnexpectedReturnNULL "dateTimeAddWeeks" result
        result' <- (wrapBoxed DateTime) result
        touchManagedPtr datetime
        return result'

    #if ENABLE_OVERLOADING
    data DateTimeAddWeeksMethodInfo
    instance (signature ~ (Int32 -> m 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 'GI.GLib.Structs.DateTime.DateTime' -}
        -> Int32
        {- ^ /@years@/: the number of years -}
        -> m DateTime
        {- ^ __Returns:__ the newly created 'GI.GLib.Structs.DateTime.DateTime' which should be freed with
      'GI.GLib.Structs.DateTime.dateTimeUnref'. -}
    dateTimeAddYears datetime years = liftIO $ do
        datetime' <- unsafeManagedPtrGetPtr datetime
        result <- g_date_time_add_years datetime' years
        checkUnexpectedReturnNULL "dateTimeAddYears" result
        result' <- (wrapBoxed DateTime) result
        touchManagedPtr datetime
        return result'

    #if ENABLE_OVERLOADING
    data DateTimeAddYearsMethodInfo
    instance (signature ~ (Int32 -> m 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 'GI.GLib.Structs.DateTime.DateTime' -}
        -> DateTime
        {- ^ /@begin@/: a 'GI.GLib.Structs.DateTime.DateTime' -}
        -> m Int64
        {- ^ __Returns:__ the difference between the two 'GI.GLib.Structs.DateTime.DateTime', as a time
      span expressed in microseconds. -}
    dateTimeDifference end begin = liftIO $ do
        end' <- unsafeManagedPtrGetPtr end
        begin' <- unsafeManagedPtrGetPtr begin
        result <- g_date_time_difference end' begin'
        touchManagedPtr end
        touchManagedPtr begin
        return result

    #if 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.

    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)
    * %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\".
    * %P: like %p but lowercase: \"am\" or \"pm\" or a corresponding string for
    the current locale
    * %r: the time in a.m. or p.m. notation
    * %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: the time zone as an offset from UTC (+hh:mm:ss). This is a
    gnulib @/strftime()/@ extension. Since: 2.38
    * %:::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 'GI.GLib.Structs.DateTime.DateTime' -}
        -> T.Text
        {- ^ /@format@/: a valid UTF-8 string, containing the format for the
             'GI.GLib.Structs.DateTime.DateTime' -}
        -> m T.Text
        {- ^ __Returns:__ a newly allocated string formatted to the requested format
        or '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 format = liftIO $ do
        datetime' <- unsafeManagedPtrGetPtr datetime
        format' <- textToCString format
        result <- g_date_time_format datetime' format'
        checkUnexpectedReturnNULL "dateTimeFormat" result
        result' <- cstringToText result
        freeMem result
        touchManagedPtr datetime
        freeMem format'
        return result'

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

    #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 'GI.GLib.Structs.DateTime.DateTime' -}
        -> m Int32
        {- ^ __Returns:__ the day of the month -}
    dateTimeGetDayOfMonth datetime = liftIO $ do
        datetime' <- unsafeManagedPtrGetPtr datetime
        result <- g_date_time_get_day_of_month datetime'
        touchManagedPtr datetime
        return result

    #if 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 'GI.GLib.Structs.DateTime.DateTime' -}
        -> m Int32
        {- ^ __Returns:__ the day of the week -}
    dateTimeGetDayOfWeek datetime = liftIO $ do
        datetime' <- unsafeManagedPtrGetPtr datetime
        result <- g_date_time_get_day_of_week datetime'
        touchManagedPtr datetime
        return result

    #if 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 'GI.GLib.Structs.DateTime.DateTime' -}
        -> m Int32
        {- ^ __Returns:__ the day of the year -}
    dateTimeGetDayOfYear datetime = liftIO $ do
        datetime' <- unsafeManagedPtrGetPtr datetime
        result <- g_date_time_get_day_of_year datetime'
        touchManagedPtr datetime
        return result

    #if 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 'GI.GLib.Structs.DateTime.DateTime' -}
        -> m Int32
        {- ^ __Returns:__ the hour of the day -}
    dateTimeGetHour datetime = liftIO $ do
        datetime' <- unsafeManagedPtrGetPtr datetime
        result <- g_date_time_get_hour datetime'
        touchManagedPtr datetime
        return result

    #if 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 'GI.GLib.Structs.DateTime.DateTime' -}
        -> m Int32
        {- ^ __Returns:__ the microsecond of the second -}
    dateTimeGetMicrosecond datetime = liftIO $ do
        datetime' <- unsafeManagedPtrGetPtr datetime
        result <- g_date_time_get_microsecond datetime'
        touchManagedPtr datetime
        return result

    #if 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 'GI.GLib.Structs.DateTime.DateTime' -}
        -> m Int32
        {- ^ __Returns:__ the minute of the hour -}
    dateTimeGetMinute datetime = liftIO $ do
        datetime' <- unsafeManagedPtrGetPtr datetime
        result <- g_date_time_get_minute datetime'
        touchManagedPtr datetime
        return result

    #if 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 'GI.GLib.Structs.DateTime.DateTime' -}
        -> m Int32
        {- ^ __Returns:__ the month represented by /@datetime@/ -}
    dateTimeGetMonth datetime = liftIO $ do
        datetime' <- unsafeManagedPtrGetPtr datetime
        result <- g_date_time_get_month datetime'
        touchManagedPtr datetime
        return result

    #if 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 'GI.GLib.Structs.DateTime.DateTime' -}
        -> m Int32
        {- ^ __Returns:__ the second represented by /@datetime@/ -}
    dateTimeGetSecond datetime = liftIO $ do
        datetime' <- unsafeManagedPtrGetPtr datetime
        result <- g_date_time_get_second datetime'
        touchManagedPtr datetime
        return result

    #if 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 'GI.GLib.Structs.DateTime.DateTime' -}
        -> m Double
        {- ^ __Returns:__ the number of seconds -}
    dateTimeGetSeconds datetime = liftIO $ do
        datetime' <- unsafeManagedPtrGetPtr datetime
        result <- g_date_time_get_seconds datetime'
        let result' = realToFrac result
        touchManagedPtr datetime
        return result'

    #if 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 'GI.GLib.Structs.DateTime.DateTime' -}
        -> m GLib.TimeZone.TimeZone
        {- ^ __Returns:__ the time zone -}
    dateTimeGetTimezone datetime = liftIO $ do
        datetime' <- unsafeManagedPtrGetPtr datetime
        result <- g_date_time_get_timezone datetime'
        checkUnexpectedReturnNULL "dateTimeGetTimezone" result
        result' <- (newBoxed GLib.TimeZone.TimeZone) result
        touchManagedPtr datetime
        return result'

    #if 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 'GI.GLib.Structs.DateTime.DateTime' -}
        -> m T.Text
        {- ^ __Returns:__ the time zone abbreviation. The returned
             string is owned by the 'GI.GLib.Structs.DateTime.DateTime' and it should not be
             modified or freed -}
    dateTimeGetTimezoneAbbreviation datetime = liftIO $ do
        datetime' <- unsafeManagedPtrGetPtr datetime
        result <- g_date_time_get_timezone_abbreviation datetime'
        checkUnexpectedReturnNULL "dateTimeGetTimezoneAbbreviation" result
        result' <- cstringToText result
        touchManagedPtr datetime
        return result'

    #if 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 '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 = liftIO $ do
        datetime' <- unsafeManagedPtrGetPtr datetime
        result <- g_date_time_get_utc_offset datetime'
        touchManagedPtr datetime
        return result

    #if 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 'GI.GLib.Structs.DateTime.DateTime' -}
        -> m Int32
        {- ^ __Returns:__ the ISO 8601 week-numbering year for /@datetime@/ -}
    dateTimeGetWeekNumberingYear datetime = liftIO $ do
        datetime' <- unsafeManagedPtrGetPtr datetime
        result <- g_date_time_get_week_numbering_year datetime'
        touchManagedPtr datetime
        return result

    #if 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 'GI.GLib.Structs.DateTime.DateTime' -}
        -> m Int32
        {- ^ __Returns:__ the ISO 8601 week number for /@datetime@/. -}
    dateTimeGetWeekOfYear datetime = liftIO $ do
        datetime' <- unsafeManagedPtrGetPtr datetime
        result <- g_date_time_get_week_of_year datetime'
        touchManagedPtr datetime
        return result

    #if 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 'GI.GLib.Structs.DateTime.DateTime' -}
        -> m Int32
        {- ^ __Returns:__ the year represented by /@datetime@/ -}
    dateTimeGetYear datetime = liftIO $ do
        datetime' <- unsafeManagedPtrGetPtr datetime
        result <- g_date_time_get_year datetime'
        touchManagedPtr datetime
        return result

    #if 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 'GI.GLib.Structs.DateTime.DateTime'.

    /Since: 2.26/
    -}
    dateTimeGetYmd ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        DateTime
        {- ^ /@datetime@/: a 'GI.GLib.Structs.DateTime.DateTime'. -}
        -> m ((Int32, Int32, Int32))
    dateTimeGetYmd datetime = liftIO $ do
        datetime' <- unsafeManagedPtrGetPtr datetime
        year <- allocMem :: IO (Ptr Int32)
        month <- allocMem :: IO (Ptr Int32)
        day <- allocMem :: IO (Ptr Int32)
        g_date_time_get_ymd datetime' year month day
        year' <- peek year
        month' <- peek month
        day' <- peek day
        touchManagedPtr datetime
        freeMem year
        freeMem month
        freeMem day
        return (year', month', day')

    #if 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 'GI.GLib.Structs.DateTime.DateTime' -}
        -> m Bool
        {- ^ __Returns:__ 'True' if daylight savings time is in effect -}
    dateTimeIsDaylightSavings datetime = liftIO $ do
        datetime' <- unsafeManagedPtrGetPtr datetime
        result <- g_date_time_is_daylight_savings datetime'
        let result' = (/= 0) result
        touchManagedPtr datetime
        return result'

    #if 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 'GI.GLib.Structs.DateTime.DateTime' -}
        -> m DateTime
        {- ^ __Returns:__ the 'GI.GLib.Structs.DateTime.DateTime' with the reference count increased -}
    dateTimeRef datetime = liftIO $ do
        datetime' <- unsafeManagedPtrGetPtr datetime
        result <- g_date_time_ref datetime'
        checkUnexpectedReturnNULL "dateTimeRef" result
        result' <- (wrapBoxed DateTime) result
        touchManagedPtr datetime
        return result'

    #if 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 '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 'GI.GLib.Structs.DateTime.DateTime' -}
        -> m DateTime
        {- ^ __Returns:__ the newly created 'GI.GLib.Structs.DateTime.DateTime' -}
    dateTimeToLocal datetime = liftIO $ do
        datetime' <- unsafeManagedPtrGetPtr datetime
        result <- g_date_time_to_local datetime'
        checkUnexpectedReturnNULL "dateTimeToLocal" result
        result' <- (wrapBoxed DateTime) result
        touchManagedPtr datetime
        return result'

    #if ENABLE_OVERLOADING
    data DateTimeToLocalMethodInfo
    instance (signature ~ (m 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

    {- |
    Stores the instant in time that /@datetime@/ represents into /@tv@/.

    The time contained in a '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 'GI.GLib.Structs.TimeVal.TimeVal' is incapable of storing the entire
    range of values that 'GI.GLib.Structs.DateTime.DateTime' is capable of expressing.  On those
    systems, this function returns '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 'GI.GLib.Structs.DateTime.DateTime' -}
        -> GLib.TimeVal.TimeVal
        {- ^ /@tv@/: a 'GI.GLib.Structs.TimeVal.TimeVal' to modify -}
        -> m Bool
        {- ^ __Returns:__ 'True' if successful, else 'False' -}
    dateTimeToTimeval datetime tv = liftIO $ do
        datetime' <- unsafeManagedPtrGetPtr datetime
        tv' <- unsafeManagedPtrGetPtr tv
        result <- g_date_time_to_timeval datetime' tv'
        let result' = (/= 0) result
        touchManagedPtr datetime
        touchManagedPtr tv
        return result'

    #if 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 '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).

    You should release the return value by calling 'GI.GLib.Structs.DateTime.dateTimeUnref'
    when you are done with it.

    /Since: 2.26/
    -}
    dateTimeToTimezone ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        DateTime
        {- ^ /@datetime@/: a 'GI.GLib.Structs.DateTime.DateTime' -}
        -> GLib.TimeZone.TimeZone
        {- ^ /@tz@/: the new 'GI.GLib.Structs.TimeZone.TimeZone' -}
        -> m DateTime
        {- ^ __Returns:__ a new 'GI.GLib.Structs.DateTime.DateTime', or 'Nothing' -}
    dateTimeToTimezone datetime tz = liftIO $ do
        datetime' <- unsafeManagedPtrGetPtr datetime
        tz' <- unsafeManagedPtrGetPtr tz
        result <- g_date_time_to_timezone datetime' tz'
        checkUnexpectedReturnNULL "dateTimeToTimezone" result
        result' <- (wrapBoxed DateTime) result
        touchManagedPtr datetime
        touchManagedPtr tz
        return result'

    #if ENABLE_OVERLOADING
    data DateTimeToTimezoneMethodInfo
    instance (signature ~ (GLib.TimeZone.TimeZone -> m 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 'GI.GLib.Structs.DateTime.DateTime' -}
        -> m Int64
        {- ^ __Returns:__ the Unix time corresponding to /@datetime@/ -}
    dateTimeToUnix datetime = liftIO $ do
        datetime' <- unsafeManagedPtrGetPtr datetime
        result <- g_date_time_to_unix datetime'
        touchManagedPtr datetime
        return result

    #if 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 '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 'GI.GLib.Structs.DateTime.DateTime' -}
        -> m DateTime
        {- ^ __Returns:__ the newly created 'GI.GLib.Structs.DateTime.DateTime' -}
    dateTimeToUtc datetime = liftIO $ do
        datetime' <- unsafeManagedPtrGetPtr datetime
        result <- g_date_time_to_utc datetime'
        checkUnexpectedReturnNULL "dateTimeToUtc" result
        result' <- (wrapBoxed DateTime) result
        touchManagedPtr datetime
        return result'

    #if ENABLE_OVERLOADING
    data DateTimeToUtcMethodInfo
    instance (signature ~ (m 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 'GI.GLib.Structs.DateTime.DateTime' -}
        -> m ()
    dateTimeUnref datetime = liftIO $ do
        datetime' <- unsafeManagedPtrGetPtr datetime
        g_date_time_unref datetime'
        touchManagedPtr datetime
        return ()

    #if 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 'GI.GLib.Callbacks.CompareFunc'. Both @/GDateTimes/@ must be non-'Nothing'.

    /Since: 2.26/
    -}
    dateTimeCompare ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        Ptr ()
        {- ^ /@dt1@/: first 'GI.GLib.Structs.DateTime.DateTime' to compare -}
        -> Ptr ()
        {- ^ /@dt2@/: second '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 dt1 dt2 = liftIO $ do
        result <- g_date_time_compare dt1 dt2
        return result

    #if 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 'GI.GLib.Structs.DateTime.DateTime' -}
        -> Ptr ()
        {- ^ /@dt2@/: a 'GI.GLib.Structs.DateTime.DateTime' -}
        -> m Bool
        {- ^ __Returns:__ 'True' if /@dt1@/ and /@dt2@/ are equal -}
    dateTimeEqual dt1 dt2 = liftIO $ do
        result <- g_date_time_equal dt1 dt2
        let result' = (/= 0) result
        return result'

    #if 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 'GI.GLib.Structs.HashTable.HashTable'.

    /Since: 2.26/
    -}
    dateTimeHash ::
        (B.CallStack.HasCallStack, MonadIO m) =>
        Ptr ()
        {- ^ /@datetime@/: a 'GI.GLib.Structs.DateTime.DateTime' -}
        -> m Word32
        {- ^ __Returns:__ a @/guint/@ containing the hash -}
    dateTimeHash datetime = liftIO $ do
        result <- g_date_time_hash datetime
        return result

    #if ENABLE_OVERLOADING
    #endif

    #if 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 "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) => O.IsLabelProxy t (DateTime -> p) where
        fromLabelProxy _ = O.overloadedMethod (O.MethodProxy :: O.MethodProxy info)

    #if MIN_VERSION_base(4,9,0)
    instance (info ~ ResolveDateTimeMethod t DateTime, O.MethodInfo info DateTime p) => O.IsLabel t (DateTime -> p) where
    #if MIN_VERSION_base(4,10,0)
        fromLabel = O.overloadedMethod (O.MethodProxy :: O.MethodProxy info)
    #else
        fromLabel _ = O.overloadedMethod (O.MethodProxy :: O.MethodProxy info)
    #endif
    #endif

    #endif