code: def test_create1(self):
      G = nx.DiGraph([(0, 1), (1, 2), (2, 3)])
      L = nx.line_graph(G, create_using=nx.Graph())
      assert edges_equal(
          L.edges(), [((0, 1), (1, 2)), ((1, 2), (2, 3))]
      )
  
imports: import pytest
  import networkx
  from networkx.generators import line
  from networkx.utils import edges_equal
label_desc: Use image node_id 10 for calling the TestGeneratorLine obj's underlying member method code with example usage: obj.test_create1() without return types