| PopulateFolderTask.Callback | Callback interface invoked regarding PopulateFolderTask. |
| PopulateSdFolderTask.Callback | Callback interface invoked regarding PopulateSdFolderTask. |
| PopulateFolderTask | Populates asynchronously the file info list for internal Folder |
| PopulateSdFolderTask | Populates asynchronously the file info list for SD Card |