public static void generateClassic(final AbstractTinkerGraph g) {
        final Vertex marko = g.addVertex(T.id, 1, "name", "marko", "age", 29);
        final Vertex vadas = g.addVertex(T.id, 2, "name", "vadas", "age", 27);
        final Vertex lop = g.addVertex(T.id, 3, "name", "lop", "lang", "java");
        final Vertex josh = g.addVertex(T.id, 4, "name", "josh", "age", 32);
        final Vertex ripple = g.addVertex(T.id, 5, "name", "ripple", "lang", "java");
        final Vertex peter = g.addVertex(T.id, 6, "name", "peter", "age", 35);
        marko.addEdge("knows", vadas, T.id, 7, "weight", 0.5f);
        marko.addEdge("knows", josh, T.id, 8, "weight", 1.0f);
        marko.addEdge("created", lop, T.id, 9, "weight", 0.4f);
        josh.addEdge("created", ripple, T.id, 10, "weight", 1.0f);
        josh.addEdge("created", lop, T.id, 11, "weight", 0.4f);
        peter.addEdge("created", lop, T.id, 12, "weight", 0.2f);
    }
Generate the graph in {@link #createClassic()} into an existing graph.
tinkergraph-gremlin/src/main/java/org/apache/tinkerpop/gremlin/tinkergraph/structure/TinkerFactory.java