code: def test_edgeless_graph(self):
      G = nx.empty_graph(5)
      with pytest.raises(nx.NetworkXError, match="edgeless graph"):
          nx.inverse_line_graph(G)
  
imports: import pytest
  import networkx
  from networkx.generators import line
  from networkx.utils import edges_equal
label_desc: Use image node_id 9 for calling the TestGeneratorInverseLine obj's underlying member method code with example usage: obj.test_edgeless_graph() without return types