You can search for identifiers within the package.
in-package search v0.2.0
ppx_import
Ppx_import.Tt
module At = Asttypes
val copy_mutable_flag : At.mutable_flag -> Ppxlib.mutable_flag
val copy_private_flag : At.private_flag -> Ppxlib.private_flag
val copy_arg_label : At.arg_label -> Ppxlib.arg_label
val copy_attributes : Parsetree.attributes -> Ppxlib_ast__Import.Js.Ast.Parsetree.attributes