etsysFileListingFileOrigin 1.3.6.1.4.1.5624.1.2.15.2.1.1.6

The source URL of this file, if it was created by a transfer, or an application name, if it was created by an application. If this information is unavailable return the null string. Since most of the user files on our devices are, or would be, created by file transfers or applications this would be an interesting but otherwise uncommon piece of information.