@Override
    public String toString() {
        if (this.hasContainers.isEmpty())
            return super.toString();
        else
            return (null == this.ids || 0 == this.ids.length) ?
                    StringFactory.stepString(this, this.returnClass.getSimpleName().toLowerCase(), this.hasContainers) :
                    StringFactory.stepString(this, this.returnClass.getSimpleName().toLowerCase(), Arrays.toString(this.ids), this.hasContainers);
    }
List of iterators opened by this step.
tinkergraph-gremlin/src/main/java/org/apache/tinkerpop/gremlin/tinkergraph/process/traversal/step/sideEffect/TinkerGraphStep.java