code: def test_all_shortest_paths_raise(self):
      with pytest.raises(nx.NetworkXNoPath):
          G = nx.path_graph(4)
          G.add_node(4)
          list(nx.all_shortest_paths(G, 0, 4))
  
imports: import pytest
  import networkx
label_desc: Use image node_id 15 for calling the TestGenericPath obj's underlying member method code with example usage: obj.test_all_shortest_paths_raise() without return types