@Test
        @FeatureRequirementSet(FeatureRequirementSet.Package.SIMPLE)
        @FeatureRequirement(featureClass = Graph.Features.EdgeFeatures.class, feature = Graph.Features.EdgeFeatures.FEATURE_NULL_PROPERTY_VALUES)
        public void shouldAllowNullAddEdge() throws Exception {
            final Vertex v = this.graph.addVertex();
            final Edge e = v.addEdge("self", v, "name", null);
            assertNull(e.value("name"));
        }
Basic tests for the {@link Property} class.
gremlin-test/src/main/java/org/apache/tinkerpop/gremlin/structure/PropertyTest.java