@Override
    public void setRequesterCharged(boolean isRequesterCharged) {
        this.isRequesterCharged = isRequesterCharged;
    }
Returns an identifier which identifies the upload part by its part number
and the entity tag computed from the part's data. This information is
later needed to complete a multipart upload.

@return An identifier which identifies the upload part by its part number
        and the entity tag computed from the part's data.
aws-java-sdk-s3/src/main/java/com/amazonaws/services/s3/model/UploadPartResult.java