private void installUndoRedo(JTextComponent textComponent) {
		UndoRedoKeeper undoRedoKeeper = DockingUtils.installUndoRedo(textComponent);

		// save for later so that we can clear when the dialog is closed
		Document document = textComponent.getDocument();
		documentUndoRedoMap.put(document, undoRedoKeeper);
	}
Display this dialog.
@param cu code unit
@param type comment type
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/comments/CommentsDialog.java