@Override
    public void execute(GraphModel graphModel) {
        Graph graph = graphModel.getGraphVisible();
        execute(graph);
    }
@Test
    public void testColumnReplace() {
        GraphModel graphModel = GraphGenerator.generateNullUndirectedGraph(1);

        graphModel.getNodeTable().addColumn(WeightedDegree.WDEGREE, String.class);

        WeightedDegree d = new WeightedDegree();
        d.execute(graphModel);
    }