@Test
    public void shouldGetTraverser() {
        final TraverserSet<String> ts = makeStringTraversers();

        final Traverser.Admin<String> a = ts.get(makeTraverser("a", 1));
        assertEquals("a", a.get());
        assertEquals(2, a.bulk());

        final Traverser.Admin<String> b2 = ts.get(makeTraverser("b2", 1));
        assertEquals("b2", b2.get());
        assertEquals(1, b2.bulk());

        final Traverser.Admin<String> notHere = ts.get(makeTraverser("notHere", 1));
        assertNull(notHere);
    }
@author Stephen Mallette (http://stephen.genoprime.com)
gremlin-core/src/test/java/org/apache/tinkerpop/gremlin/process/traversal/traverser/util/TraverserSetImplementationTest.java