def METHOD_NAME(self, verbose, toplevel):
    return self._to_dict_extra(
        {
            "class": "BitMaskedArray",
            "mask": self._mask,
            "valid_when": self._valid_when,
            "lsb_order": self._lsb_order,
            "content": self._content.METHOD_NAME(verbose, toplevel=False),
        },
        verbose,
    )