You can search for identifiers within the package.
in-package search v0.2.0
val is_none : 'a option -> bool
val is_some : 'a option -> bool
val get_some : 'a option -> 'a
val map_some : 'a option -> ('a -> 'b) -> 'b option
val resolve : 'a option -> ('a -> 'b) -> 'b -> 'b