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