private void findTabbedPane() {
		Component[] comp = viewPanel.getComponents();
		for (Component element : comp) {
			if (element instanceof JTabbedPane) {
				tabbedPane = (JTabbedPane) element;
				break;
			}
		}

		assertNotNull(tabbedPane);
	}
Test the view manager plugin that controls the view in the browser and the
program tree.
Ghidra/Features/Base/src/test.slow/java/ghidra/app/plugin/core/programtree/ViewManagerPluginTest.java