You can search for identifiers within the package.
in-package search v0.2.0
ppx_obus
Ppx_obus
val rewriter_name : string
val find_attr_expr : string -> Ppxlib.attribute list -> Ppxlib.expression option
val register_obus_exception : Ppxlib.structure_item -> Ppxlib.structure_item option
val obus_mapper : Ppxlib.Ast_traverse.map