| HttpStatus | Constants enumerating the HTTP status codes. |
| Io | Simple IO utils for plain response contents. |
| MD5Checksum | Based on: http://javarevisited.blogspot.com/2013/06/how-to-generate-md5-checksum-for-files.html#ixzz38QFXWUu0 |
| MediaContent | A wrapper content type for MediaFile. |
| ModelUtil | Handful util class for various models tasks. |
| PlainTextContent | Little wrapper to make plain text multipart form content wrapping easier. |
| ProgressInputStream | Created based on http://stackoverflow.com/questions/1339437/inputstream-or-reader-wrapper-for-progress-reporting |