@Override
    public InjectStep<S> clone() {
        final InjectStep<S> clone = (InjectStep<S>) super.clone();
        clone.start = new ArrayIterator<>(GValue.resolveToValues(clone.injections));
        return clone;
    }
@author Marko A. Rodriguez (http://markorodriguez.com)
gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/step/sideEffect/InjectStep.java