def get_parent_ps(self):
        """
        Return a :class:`ParameterSet` of all Parameters in the same
        :class:`phoebe.frontend.bundle.Bundle` which share the same
        meta-tags (except qualifier, twig, uniquetwig)

        :return: the parent :class:`ParameterSet`
        """
        if self._bundle is None:
            return None

        metawargs = {k:v for k,v in self.meta.items() if k not in ['qualifier', 'twig', 'uniquetwig']}

        return self._bundle.filter(**metawargs)