public static List<GTreeNode> getDataTreeNodesFromClipboard() {
		Transferable transferable = getSystemClipboardTransferable();
		return getDataTreeNodesFromClipboard(transferable);
	}
Fetches any GTreeNodes from the system clipboard.

@return List of {@link GTreeNode}s that were in the system clipboard, or empty list if
no nodes or some other access error.
Ghidra/Framework/Project/src/main/java/ghidra/framework/main/datatree/DataTreeClipboardUtils.java