sig
type ('a, 'b) poly = 'a -> 'b
val instantiate :
?label:string * (unit -> 'a) option ->
'a Type.t -> 'b Type.t -> ('a -> 'b) Type.t * bool
val is_instance_of : 'a Type.t -> bool
val get_instance :
('a -> 'b) Type.t -> 'a Type.t * 'b Type.t * string option
val get_optional_argument : ('a -> 'b) Type.t -> (unit -> 'a) option
end