@Override
		public Object getTransferData(DataFlavor flavor)
				throws UnsupportedFlavorException, IOException {
			return null;
		}
@see java.awt.datatransfer.ClipboardOwner#lostOwnership(java.awt.datatransfer.Clipboard,
     java.awt.datatransfer.Transferable)
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/clipboard/ClipboardPlugin.java