code: def test_finding_routines(self):
      G = nx.Graph({1: [2], 2: [3], 3: [4], 4: [5], 5: [6]})
      G.add_edge(2, 4)
      G.add_edge(2, 5)
      G.add_edge(2, 7)
      G.add_edge(3, 6)
      G.add_edge(4, 6)
  
      # Alternating 4 cycle
      assert nxt.find_alternating_4_cycle(G) == [1, 2, 3, 6]
  
      # Threshold graph
      TG = nxt.find_threshold_graph(G)
      assert nxt.is_threshold_graph(TG)
      assert sorted(TG.nodes()) == [1, 2, 3, 4, 5, 7]
  
      cs = nxt.creation_sequence(dict(TG.degree()), with_labels=True)
      assert nxt.find_creation_sequence(G) == cs
  
imports: import pytest
  import networkx
  import networkx.algorithms.threshold
  from networkx.algorithms.isomorphism.isomorph import graph_could_be_isomorphic
label_desc: Use image node_id 14 for calling the TestGeneratorThreshold obj's underlying member method code with example usage: obj.test_finding_routines() without return types