public void copy()
        {
            PropTimelineClipboardContainer clipContainer = new PropTimelineClipboardContainer();

            clipContainer.addActions(timelineView.SelectedData);
            clipboard.copyToSourceObject(clipContainer);
        }
        public void paste()
        {
            PropTimelineClipboardContainer clipContainer = clipboard.createCopy <PropTimelineClipboardContainer>();

            if (clipContainer != null)
            {
                clipContainer.addActionsToTimeline(propData, this, timelineView.MarkerTime, timelineView.Duration);
            }
        }