@SuppressWarnings("unused")
	private JTextField findTextField(Container container) {
		Component[] c = container.getComponents();
		for (Component element : c) {
			if (element instanceof JTextField) {
				return (JTextField) element;
			}
			if (element instanceof Container) {
				JTextField tf = findTextField((Container) element);
				if (tf != null) {
					return tf;
				}
			}
		}
		return null;
	}
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