public void cleanup() {
		disposeViewer();

		// do not do this, the component gets re-used between graph loads--must keep the listener
		// clientSatelliteListener = Optional.empty();
	}
Effectively clears this display.  This method is not called dispose, as that implies
the end of an object's lifecycle.  This object can be re-used after this method is
called.
Ghidra/Framework/Graph/src/main/java/ghidra/graph/viewer/VisualGraphView.java