When info was created from a known filename, return it. In some situations such as the #GDesktopAppInfo returned from gio.desktop_app_info.DesktopAppInfo.newFromKeyfile, this function will return null.
The full path to the file for info, or null if not known.
When info was created from a known filename, return it. In some situations such as the #GDesktopAppInfo returned from gio.desktop_app_info.DesktopAppInfo.newFromKeyfile, this function will return null.