public AsyncVolumeSliceSopFrameData(int frameNumber, AsyncVolumeSliceSopDataSource parent)
     : base(frameNumber, parent)
 {
     if (Parent.Slice.VolumeReference is ICachedVolumeReference)
     {
         _cachedVolumeReference = (ICachedVolumeReference)Parent.Slice.VolumeReference.Clone();
     }
 }
			public AsyncVolumeSliceSopFrameData(int frameNumber, AsyncVolumeSliceSopDataSource parent)
				: base(frameNumber, parent)
			{
				if (Parent.Slice.VolumeReference is ICachedVolumeReference)
				{
					_cachedVolumeReference = (ICachedVolumeReference) Parent.Slice.VolumeReference.Clone();
				}
			}