@Test
    public void shouldNotFindAnIdValueBecauseItIsNull() {
        assertEquals("default", ElementHelper.getIdValue("test", 321, T.id, null, "testagain", "that").orElse("default"));
    }
@author Stephen Mallette (http://stephen.genoprime.com)
gremlin-core/src/test/java/org/apache/tinkerpop/gremlin/structure/util/ElementHelperTest.java