@Test(expected = FastNoSuchElementException.class)
    public void shouldRemoveTraverserAndThrowBecauseEmpty() {
        traverserSetMaker.get().remove();
    }
@author Stephen Mallette (http://stephen.genoprime.com)
gremlin-core/src/test/java/org/apache/tinkerpop/gremlin/process/traversal/traverser/util/TraverserSetImplementationTest.java