'Set whether the existing bounds of the box should be ignored
by subsequent calls to :meth:`update_from_data_xy`.
*value*:
- When True, subsequent calls to :meth:`update_from_data_xy`
will ignore the existing bounds of the :class:`Bbox`.
- When False, subsequent calls to :meth:`update_from_data_xy`
will include the existing bounds of the :class:`Bbox`.'

def ignore(self, value):

    self._ignore = value
