You can search for identifiers within the package.
in-package search v0.2.0
erlang
Ast_helper.Name
val var : string -> Erlang__.Erl_ast.name
val atom : Erlang__.Erl_ast.atom -> Erlang__.Erl_ast.name
val qualified : m:Erlang__.Erl_ast.name -> f:Erlang__.Erl_ast.name -> Erlang__.Erl_ast.name
val to_string : Erlang__.Erl_ast.name -> string