GESTimeline @gestimeline: the object which received the signal. @arg1: @gestimeline: the object which received the signal. @arg1: @gestimeline: the object which received the signal. @arg1: @gestimeline: the object which received the signal. @arg1: @parent_class: @track_added: @track_removed: @layer_added: @layer_removed: @void: @Returns: @timeline: @layer: @Returns: @timeline: @layer: @Returns: @timeline: @track: @Returns: @timeline: @track: @Returns: @timeline: @pad: @Returns: @uri: @Returns: @timeline: @uri: @Returns: @timeline: @Returns: