          trust_data = PROVIDERS.trust_api.create_trust(trust_ref0['id'],                                                       trust_ref0, roles)         self.assertIsNotNone(trust_data)         trust_data = PROVIDERS.trust_api.create_trust(trust_ref0['id'],                                                       trust_ref0, roles)         self.assertIsNotNone(trust_data)         PROVIDERS.trust_api.delete_trust(trust_ref0['id'])         trust_data = PROVIDERS.trust_api.create_trust(trust_ref0['id'],                                                       trust_ref0, roles)         self.assertIsNotNone(trust_data)          PROVIDERS.trust_api.flush_expired_and_soft_deleted_trusts(             date=datetime.datetime.utcnow())         trusts = self.trust_api.list_trusts()         self.assertEqual(len(trusts), 0)      