How to use the bambi.priors.Family function in bambi

def test_family_class():
    prior = Prior('CheeseWhiz', holes=0, taste=-10)
    family = Family('cheese', prior, link='ferment', parent='holes')
    for name in ['name', 'prior', 'link', 'parent']:
        assert hasattr(family, name)

def test_prior_retrieval():
    config_file = join(dirname(__file__), 'data', 'sample_priors.json')
    pf = PriorFactory(config_file)
    prior = pf.get(dist='asiago')
    assert prior.name == 'Asiago'
    assert isinstance(prior, Prior)
    assert prior.args['hardness'] == 10
    with pytest.raises(KeyError):
        assert prior.args['holes'] == 4
    family = pf.get(family='hard')
    assert isinstance(family, Family)
    assert family.link == 'grate'
    backup = family.prior.args['backup']
    assert isinstance(backup, Prior)
    assert backup.args['flavor'] == 10000
    prior = pf.get(term='yellow')
    assert prior.name == 'Swiss'

"""

        if dist is not None:
            if dist not in self.dists:
                raise ValueError("'%s' is not a valid distribution name." % dist)
            return self._get_prior(self.dists[dist])
        elif term is not None:
            if term not in self.terms:
                raise ValueError("'%s' is not a valid term type." % term)
            return self._get_prior(self.terms[term])
        elif family is not None:
            if family not in self.families:
                raise ValueError("'%s' is not a valid family name." % family)
            _f = self.families[family]
            prior = self._get_prior(_f["dist"])
            return Family(family, prior, _f["link"], _f["parent"])