protected void initializeLocation(V v) {
		VisualGraphLayout<V, E> layout = getLayout();
		if (layout == null) {
			// we cannot initialize our locations without a layout; this should be set after
			// the graph and layout have both been created
			return;
		}

		Point2D location = layout.apply(v);
		v.setLocation(location);
	}
A default {@link VisualGraph} that implements basic setup for things like event processing.

<P>Notes:
<UL>
	<LI><U>Selected Vertices and the Focused Vertex</U> - 
		there can be multiple selected vertices, but only a single focused vertex.  
     <B>{@link #getSelectedVertices()} will return both 
     the selected vertices or	the focused vertex if there are no vertices selected.</B>
 </LI>
 <LI>Clicking a single vertex will focus it.  Control-clicking multiple vertices will
 		cause them all to be selected, with no focused vertex.
	</LI>
 <LI><U>Rendering Edges</U> - edges are rendered with or without articulations if 
        they have them.  This is built-in to the default graphing edge renderer.  
        Some layouts require custom edge rendering and will provide their own 
        renderer as needed.
 </LI>
</UL>


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