`sig
type data = OASISTypes.package
type act = context_act -> OASISTypes.package -> context_act
type kind = [ `Extra ]
type self_t = kind t
type self_plugin = kind OASISTypes.plugin
val create : self_plugin -> self_t * all_t
val register_act : self_t -> act -> unit
val act : self_plugin -> act
val quickstart_question :
unit -> self_plugin OASISTypes.quickstart_question
val value : self_plugin OASISValues.t
end`