You can search for identifiers within the package.
in-package search v0.2.0
ocamlformat-lib.parser_standard
Ast_mapper.CT
val map : mapper -> Parsetree.class_type -> Parsetree.class_type
val map_field : mapper -> Parsetree.class_type_field -> Parsetree.class_type_field
val map_signature : mapper -> Parsetree.class_signature -> Parsetree.class_signature