public static void relabelCallGraphNodes(
     GraphReader<CallGraphNode, CallGraphLink> reader, Collection<CallGraphNode> vertices) {
   // Reassign the labels of the vertices based on what was
   // read in. (kludgy)
   for (CallGraphNode vertex : vertices) {
     String vertexLabel = reader.getVertexLabel(vertex);
     vertex.setLabel(vertexLabel);
     // vertex.setName(vertexLabel);
   }
 }