protected Object getVertexProperty(String propName, Vertex v) {
		ObjectAttribute<Vertex> attrib = getVertexAttribute(propName);
		return attrib.getValue(v);
	}
This is a helper method that gets a property named propName
for vertex v.

@param propName the property name
@param v the vertex
@return the property value
Ghidra/Framework/Generic/src/main/java/ghidra/util/graph/DirectedGraph.java