get_filename

Description:

public unowned string get_filename ()

When this was created from a known filename, return it.

In some situations such as a [class@GioUnix.DesktopAppInfo] returned from [ctor@GioUnix.DesktopAppInfo.new_from_keyfile], this function will return `NULL`.

Parameters:

this	a [class@GioUnix.DesktopAppInfo]

Returns:

The full path to the file for this, or `NULL` if not known.