@Test
        @FeatureRequirement(featureClass = Graph.Features.EdgeFeatures.class, feature = Graph.Features.EdgeFeatures.FEATURE_ADD_EDGES)
        @FeatureRequirement(featureClass = Graph.Features.VertexFeatures.class, feature = Graph.Features.VertexFeatures.FEATURE_ADD_VERTICES)
        public void shouldReadGraphMLWithoutEdgeIds() throws IOException {
            final GraphReader reader = GraphMLReader.build().strict(false).create();
            try (final InputStream stream = getResourceAsStream(GraphMLResourceAccess.class, "graph-no-edge-ids.xml")) {
                reader.readGraph(stream, graph);
            }
            assertEquals(1, IteratorUtils.count(graph.edges()));
            assertEquals(2, IteratorUtils.count(graph.vertices()));
        }
@author Joshua Shinavier (http://fortytwo.net)
@author Stephen Mallette (http://stephen.genoprime.com)
@author Marko A. Rodriguez (http://markorodriguez.com)
gremlin-test/src/main/java/org/apache/tinkerpop/gremlin/structure/io/IoTest.java