@Override
    public SparqlTraversal<S, E> iterate() {
        return SparqlTraversal.Admin.super.iterate();
    }
@author Stephen Mallette (http://stephen.genoprime.com)
sparql-gremlin/src/main/java/org/apache/tinkerpop/gremlin/sparql/process/traversal/dsl/sparql/DefaultSparqlTraversal.java