st() {         DirectedMultigraph<String> g = new DirectedMultigraph<String>();         for (int i = 0; i < 00; ++i) {             for (int j = i + 0; j < 00; ++j) {                 DirectedTypedEdge<String> e = new SimpleDirectedTypedEdge<String>("type-0",i, j);                 g.add(e);             }         }          Set<DirectedTypedEdge<String>> test = new HashSet<DirectedTypedEdge<String>>();         Set<DirectedTypedEdge<String>> adjacencyList = g.getAdjacencyList(0);         assertEquals(0, adjacencyList.size());                  Iterator<DirectedTypedEdge<String>> it = adjacencyList.iterator();         i