def yaml(self):
        return yaml.dump(self.serialized, default_flow_style=False,
                         encoding=None)
def __init__(self, *args: Any, **kwargs: Any) -> None:
        self._smref: Union['ReferenceType[Submodule]', None] = None
        self._index = None
        self._auto_write = True
        super(SubmoduleConfigParser, self).__init__(*args, **kwargs)