@Override
	public void dispose() {
		cycleGroup = null;
		plugin = null;
		super.dispose();
	}
<code>CycleGroupAction</code> cycles data through a series
of data types defined by a <code>CycleGroup</code>.
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/function/CycleGroupAction.java