private boolean graphIsEmpty() {
		VisualizationViewer<V, E> viewer = CollectionUtils.any(viewers);
		Graph<V, E> graph = viewer.getGraphLayout().getGraph();
		return graph.getVertexCount() == 0;
	}
A job to scale one or more viewers such that the contained graph will fit entirely inside the
viewing area.

@param <V> the vertex type
@param <E> the edge type
Ghidra/Framework/Graph/src/main/java/ghidra/graph/job/FitGraphToViewJob.java