code: def test_large_longs(self):
      self.assertEqual(self.pos.__index__(), self.pos)
      self.assertEqual(self.neg.__index__(), self.neg)
  
imports: import unittest
  from test import support
  import operator
label_desc: Use image node_id 2 for calling the OverflowTestCase obj's underlying member method code with example usage: obj.test_large_longs() without return types