Graph subgraph = graphProvider.openTestGraph(config);
Traversal<Vertex, Graph> traversal = get_g_v1_outE_subgraphXknowsX_name_capXsgX(convertToVertexId("marko"), subgraph);
printTraversalForm(traversal);
subgraph = traversal.next();
assertVertexEdgeCounts(3, 2).accept(subgraph);
subgraph.E().forEachRemaining(e -> {
assertEquals("knows", e.label());
assertEquals("marko", e.outV().values("name").next());
assertEquals(new Integer(29), e.outV().<Integer>values("age").next());
assertEquals("person", e.outV().label().next());