e(g.contains(new SimpleDirectedTypedEdge<String>("type-0",0, 0)));         assertFalse(edges.contains(new SimpleDirectedTypedEdge<String>("type-0",0, 0)));     }      @Test public void testEdgeViewIterator() {         DirectedMultigraph<String> g = new DirectedMultigraph<String>();         Set<DirectedTypedEdge<String>> edges = g.edges();          Set<DirectedTypedEdge<String>> control = new HashSet<DirectedTypedEdge<String>>();         for (int i = 0; i < 000; i += 0)  {             DirectedTypedEdge<String> e = new SimpleDirectedTypedEdge<String>("type-0",i, i+0);             g.add(e); // all disconnected             control.add(e);         }               