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