@Override
    public Iterator<Vertex> vertices(final Direction direction, final String... edgeLabels) {
        return IteratorUtils.map(this.getBaseVertex().vertices(direction, edgeLabels), vertex -> HadoopVertex.this.graph.vertices(vertex.id()).next());
    }
@author Marko A. Rodriguez (http://markorodriguez.com)
hadoop-gremlin/src/main/java/org/apache/tinkerpop/gremlin/hadoop/structure/HadoopVertex.java