private IndexedTraverserSet<String, String> makeTraverserSet() {
        final IndexedTraverserSet<String,String> ts = new IndexedTraverserSet<>(x -> x);
        ts.add(makeTraverser("test", 1));
        ts.add(makeTraverser("test", 1));
        ts.add(makeTraverser("test", 1));
        ts.add(makeTraverser("test", 1));
        ts.add(makeTraverser("test", 1));
        ts.add(makeTraverser("test", 1));
        ts.add(makeTraverser("test", 1));
        ts.add(makeTraverser("test", 1));
        ts.add(makeTraverser("test", 1));
        ts.add(makeTraverser("test", 1));
        ts.add(makeTraverser("nope", 1));
        return ts;
    }
@author Stephen Mallette (http://stephen.genoprime.com)
gremlin-core/src/test/java/org/apache/tinkerpop/gremlin/process/traversal/traverser/util/IndexedTraverserSetTest.java