protected void disposeViewer() {

		if (graphComponent != null) {
			graphComponent.dispose();
			graphComponent = null;
		}

		removeSatellite();
	}
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