1, 'defaultRegion' => 'us-west-2', 'testCases' => [ [ 'operationName' => 'ListTopics', 'input' => [], 'errorExpectedFromService' => false, ], [ 'operationName' => 'Publish', 'input' => [ 'Message' => 'hello', 'TopicArn' => 'fake_topic', ], 'errorExpectedFromService' => true, ], ],];