@SuppressWarnings("unused")
    public void updatePlayInfo(Playlist playlist, Progress progress, Volume volume) {
        if (playlist != null)
            this.playlist = playlist;
        if (progress != null)
            this.progress = progress;
        if (volume != null)
            this.volume = volume;
        updatePlayInfo(playlist, progress, null, volume);
    }
@SuppressWarnings("unused")
    public void updatePlayInfo(Playlist playlist, Progress progress, Volume volume) {
        if (playlist != null)
            this.playlist = playlist;
        if (progress != null)
            this.progress = progress;
        if (volume != null)
            this.volume = volume;
        updatePlayInfo(playlist, progress, null, volume);
    }
@ SuppressWarnings ( "unused" ) public void updatePlayInfo ( Playlist playlist , Progress progress , Volume volume ) { if ( playlist != null ) this . playlist = playlist ; if ( progress != null ) this . progress = progress ; if ( volume != null ) this . volume = volume ; updatePlayInfo ( playlist , progress , null , volume ) ; }
updates the Info about the current song
@param playlist the playlist, or null
@param progress the progress, or null
@param volume the volume, or null
updates the Info about the current song