private void addTab(String title, CommentHistoryPanel panel) {
		JScrollPane sp = new JScrollPane(panel);
		tabbedPane.addTab(title, null, sp, panel.getHistory());
	}
Dialog to show comment history; has a tab for each comment type to show
history of changes to the comment.
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/comments/CommentHistoryDialog.java