@Test
    @LoadGraphWith(LoadGraphWith.GraphData.MODERN)
    public void shouldHaveSameHashCode() {
        assertEquals(ReferenceFactory.detach(g.E(convertToEdgeId("josh", "created", "lop")).next()).hashCode(), ReferenceFactory.detach(g.E(convertToEdgeId("josh", "created", "lop")).next()).hashCode());
        assertEquals(ReferenceFactory.detach(g.E(convertToEdgeId("josh", "created", "lop")).next()).hashCode(), g.E(convertToEdgeId("josh", "created", "lop")).next().hashCode());
        assertEquals(ReferenceFactory.detach(g.E(convertToEdgeId("josh", "created", "lop")).next()).hashCode(), DetachedFactory.detach(g.E(convertToEdgeId("josh", "created", "lop")).next(), false).hashCode());
    }
@author Marko A. Rodriguez (http://markorodriguez.com)
gremlin-test/src/main/java/org/apache/tinkerpop/gremlin/structure/util/reference/ReferenceEdgeTest.java