def locate(self, ns):
        if self.container is not None:
            return self.container.locate(ns)
        else:
            return None
Test that clean_invite_code raises an ValidationError if invalid.
dataset/ETHPy150Open jumoconnect/openjumo/jumodjango/lib/suds/xsd/schema.py/Schema.locate--crossover with--dataset/ETHPy150Open ofa/connect/open_connect/accounts/tests/test_forms.py/InviteEntryFormTest.test_clean_invite_code_invalid