code: def test_path(self):
      G = nx.path_graph(5)
      L = nx.line_graph(G)
      assert nx.is_isomorphic(L, nx.path_graph(4))
  
imports: import pytest
  import networkx
  from networkx.generators import line
  from networkx.utils import edges_equal
label_desc: Use image node_id 2 for calling the TestGeneratorLine obj's underlying member method code with example usage: obj.test_path() without return types