protected UploadPartResult uploadPart(UploadPartRequest reqUploadPart) {
        // Upload the ciphertext directly via the non-encrypting
        // s3 client
        return s3direct.uploadPart(reqUploadPart);
    }
Uploads the ciphertext via the non-encrypting s3 client.
@param reqUploadPart part upload request
@return the result of the part upload when there is no exception
aws-java-sdk-s3/src/main/java/com/amazonaws/services/s3/UploadObjectObserver.java