@Override
	public void viewedProjectRemoved(URL projectView) {
		SwingUtilities.invokeLater(() -> {
			ProjectDataTreePanel dtp = getViewPanel(projectView);
			if (dtp != null) {
				viewRemoved(dtp, projectView, false);
			}
		});
	}
Populates the project views data tree panel(s) whenever a project is
made active.
If no project views are open, the tabbed pane is not visible.
Ghidra/Framework/Project/src/main/java/ghidra/framework/main/ProjectDataPanel.java