private void removeFieldPanelFocusListeners(Container c) {
		if (c instanceof FieldPanel) {
			removeFocusListeners((JComponent) c);
		}

		Component[] children = c.getComponents();
		for (Component child : children) {
			if (!(child instanceof Container)) {
				continue;
			}
			removeFieldPanelFocusListeners((Container) child);
		}
	}
Note: This test is sensitive to focus. So, don't click any windows while this test is running.
Ghidra/Test/IntegrationTest/src/test.slow/java/ghidra/app/plugin/core/clipboard/ClipboardPluginTest.java