=================================
Entity, With Unknown Member Types
=================================

module corpus_test_entity is

  entity Campaign is

    identity id -> unknown

    a -> unknown

  end

end

---

    (module
      (identifier)
      (module_body
        (entity_def
          (identifier)
          (entity_body
            (entity_identity
              (member
                (member_def
                  (identifier)
                  (type_reference
                    (unknown_type)))))
            (member
              (member_def
                (identifier)
                (type_reference
                  (unknown_type))))))))
