protected VisualGraphViewUpdater<FGVertex, FGEdge> getGraphUpdater() {
		FGPrimaryViewer viewer = getPrimaryGraphViewer();
		if (viewer == null) {
			return null; // this can happen when disposed or not on a function
		}

		VisualGraphViewUpdater<FGVertex, FGEdge> updater = viewer.getViewUpdater();
		assertNotNull(updater);
		return updater;
	}
Waits for the run manager and any animation.
Ghidra/Features/FunctionGraph/src/test.slow/java/ghidra/app/plugin/core/functiongraph/AbstractFunctionGraphTest.java