Module Ast_helper.Opn

module Opn: sig .. end

---

let mk:
  (
    ~loc: Ast_helper.loc=?,
    ~attrs: Ast_helper.attrs=?,
    ~docs: Docstrings.docs=?,
    ~override: Asttypes.override_flag=?,
    Ast_helper.lid
  ) =>
  Parsetree.open_description;