code: def test_empty(self):
      G = nx.Graph()
      H = nx.inverse_line_graph(G)
      assert nx.is_isomorphic(H, nx.complete_graph(1))
  
imports: import pytest
  import networkx
  from networkx.generators import line
  from networkx.utils import edges_equal
label_desc: Use image node_id 7 for calling the TestGeneratorInverseLine obj's underlying member method code with example usage: obj.test_empty() without return types