def METHOD_NAME(self, kms_key_id_value):
    self.mq_event_source.SourceAccessConfigurations = [{"Type": "BASIC_AUTH", "URI": "SECRET_URI"}]
    self.mq_event_source.Broker = "BROKER_ARN"
    self.mq_event_source.SecretsManagerKmsKeyId = kms_key_id_value
    error_message = "('EventId', \"Property 'SecretsManagerKmsKeyId' should be a string.\")"
    with self.assertRaises(InvalidEventException) as error:
        self.mq_event_source.get_policy_statements()
    self.assertEqual(error_message, str(error.exception))