Fix omission for experimental backend objects
Fix omission for experimental backend objects

KDE/phonon-vlc,KDE/phonon-vlc,BinChengfei/phonon-vlc,panzi/phonon-vlc,panzi/phonon-vlc,KDE/phonon-vlc,BinChengfei/phonon-vlc,BinChengfei/phonon-vlc