S3TransferUtility-Sample/Objective-C/S3BackgroundTransferSampleObjC/FirstViewController.m [93:99]:
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                      expression:expression
               completionHandler:completionHandler] continueWithBlock:^id(AWSTask *task) {
        if (task.error) {
            NSLog(@"Error: %@", task.error);
        }
        if (task.result) {
            dispatch_async(dispatch_get_main_queue(), ^{
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S3TransferUtility-Sample/Objective-C/S3BackgroundTransferSampleObjC/SecondViewController.m [80:86]:
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                                  expression:expression
                           completionHandler:completionHandler] continueWithBlock:^id(AWSTask *task) {
        if (task.error) {
            NSLog(@"Error: %@", task.error);
        }
        if (task.result) {
            dispatch_async(dispatch_get_main_queue(), ^{
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