@Override
            public S3Object call() throws Exception {
                return s3.download(presignedUrlDownloadRequest)
                         .getS3Object();
            }
Returns a Callable to execute {@link AmazonS3#download(PresignedUrlDownloadRequest)} with given request.
aws-java-sdk-s3/src/main/java/com/amazonaws/services/s3/transfer/internal/PresignUrlDownloadCallable.java