code: def test_listDerived(self):
      class List(list):
          data = []
  
          def insert(self, index, item):
              self.data.insert(index, item)
  
      lst = List()
      self.module.insort_left(lst, 10)
      self.module.insort_right(lst, 5)
      self.assertEqual([5, 10], lst.data)
  
imports: import sys
  import unittest
  from test.support import import_helper
  from collections import UserList
label_desc: Use image node_id 3 for calling the TestInsort obj's underlying member method code with example usage: obj.test_listDerived() without return types