public boolean isLastPart() {
        return isLastPart;
    }
Returns true if the creator of this request has indicated this part is
the last part being uploaded in a multipart upload.

@return True if the creator of this request has indicated this part is
        the last part being uploaded in a multipart upload.
aws-java-sdk-s3/src/main/java/com/amazonaws/services/s3/model/UploadPartRequest.java