@Override
            public void apply(final Traversal.Admin<?, ?> traversal) {
                final Graph graph = traversal.getGraph().get();
                graph.addVertex("person");
            }
Validating that mid-traversal hasId() also unwraps ids in lists in addition to ids in arrays as per TINKERPOP-2863
tinkergraph-gremlin/src/test/java/org/apache/tinkerpop/gremlin/tinkergraph/structure/TinkerGraphTest.java