code: def test_type_assign_version(self):
      class C:
          x = 5
  
      self.assertEqual(type_assign_version(C), 1)
      c_ver = type_get_version(C)
  
      C.x = 6
      self.assertEqual(type_get_version(C), 0)
      self.assertEqual(type_assign_version(C), 1)
      self.assertNotEqual(type_get_version(C), 0)
      self.assertNotEqual(type_get_version(C), c_ver)
  
imports: import unittest
  import dis
  from test import support
  from test.support import import_helper
label_desc: Use image node_id 2 for calling the TypeCacheTests obj's underlying member method code with example usage: obj.test_type_assign_version() without return types