code: def init(celf, *, loop = None, unregister = None, message = None) :
          "for consistency with other classes that don’t want caller to instantiate directly."
          return \
              celf \
                (
                  loop = loop,
                  unregister = unregister,
                  message = message,
                f init(celf, *, loop = None, unregister = None, message = None) :
          "for consistency with other classes that don’t want caller to instantiate directly."
          return \
              celf \
                (
                  loop = loop,
                  unregister = unregister,
                  message = message,
                )
docs: for consistency with other classes that don’t want caller to instantiate directly.