code: def test_restoring(self):
      m = {0: "x", 3: "c", 4: "d", 5: "e", 6: "f"}
      m_rev = {"x": 0, "c": 3, "d": 4, "e": 5, "f": 6}
  
      T1 = {1, 2, 7, 9, 8}
      T2 = {"a", "b", "g", "i", "h"}
      T1_tilde = set()
      T2_tilde = set()
  
      gparams = _GraphParameters(self.G1, self.G2, {}, {}, {}, {}, {})
      sparams = _StateParameters(
          m, m_rev, T1, None, T1_tilde, None, T2, None, T2_tilde, None
      )
  
      # Remove a node from the mapping
      m.pop(0)
      m_rev.pop("x")
      _restore_Tinout(0, self.mapped[0], gparams, sparams)
  
      assert T1 == {1, 2, 7, 9, 8}
      assert T2 == {"a", "b", "g", "i", "h"}
      assert T1_tilde == {0}
      assert T2_tilde == {"x"}
  
      # Remove a node from the mapping
      m.pop(6)
      m_rev.pop("f")
      _restore_Tinout(6, self.mapped[6], gparams, sparams)
  
      assert T1 == {1, 2, 7, 9, 8}
      assert T2 == {"a", "b", "g", "i", "h"}
      assert T1_tilde == {0, 6}
      assert T2_tilde == {"x", "f"}
  
      # Remove a node from the mapping
      m.pop(3)
      m_rev.pop("c")
      _restore_Tinout(3, self.mapped[3], gparams, sparams)
  
      assert T1 == {7, 9, 8, 3}
      assert T2 == {"g", "i", "h", "c"}
      assert T1_tilde == {0, 6, 1, 2}
      assert T2_tilde == {"x", "f", "a", "b"}
  
      # Remove a node from the mapping
      m.pop(5)
      m_rev.pop("e")
      _restore_Tinout(5, self.mapped[5], gparams, sparams)
  
      assert T1 == {9, 3, 5}
      assert T2 == {"i", "c", "e"}
      assert T1_tilde == {0, 6, 1, 2, 7, 8}
      assert T2_tilde == {"x", "f", "a", "b", "g", "h"}
  
      # Remove a node from the mapping
      m.pop(4)
      m_rev.pop("d")
      _restore_Tinout(4, self.mapped[4], gparams, sparams)
  
      assert T1 == set()
      assert T2 == set()
      assert T1_tilde == set(self.G1.nodes())
      assert T2_tilde == set(self.G2.nodes())
  
imports: import itertools
  import pytest
  import networkx
  from networkx import vf2pp_is_isomorphic, vf2pp_isomorphism
  from networkx.algorithms.isomorphism.vf2pp import _consistent_PT, _cut_PT, _feasibility, _find_candidates, _find_candidates_Di, _GraphParameters, _initialize_parameters, _matching_order, _restore_Tinout, _restore_Tinout_Di, _StateParameters, _update_Tinout
label_desc: Use image node_id 2 for calling the TestGraphTinoutUpdating obj's underlying member method code with example usage: obj.test_restoring() without return types