def METHOD_NAME(
    self,
    mask=UNSET,
    content=UNSET,
    valid_when=UNSET,
    *,
    parameters=UNSET,
    form_key=UNSET,
):
    return ByteMaskedForm(
        self._mask if mask is UNSET else mask,
        self._content if content is UNSET else content,
        self._valid_when if valid_when is UNSET else valid_when,
        parameters=self._parameters if parameters is UNSET else parameters,
        form_key=self._form_key if form_key is UNSET else form_key,
    )