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

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

            if (clipContainer != null)
            {
                clipContainer.addKeyFramesToSequence(offsetSequence, this, timelineView.MarkerTime / Duration, 1.0f);
            }
        }