{config2, "", []ARN{{TargetID{"1", "webhook"}, ""}}},
		{config3, "us-east-1", []ARN{{TargetID{"1", "webhook"}, "us-east-1"}, {TargetID{"2", "amqp"}, "us-east-1"}}},
		{config3, "", []ARN{{TargetID{"1", "webhook"}, ""}, {TargetID{"2", "amqp"}, ""}}},
	}

	for i, testCase := range testCases {
		testCase.config.SetRegion(testCase.region)
		result := []ARN{}