code: def test_neg(self):
      self.assertEqual(-(1 + 6j), -1 - 6j)
  
imports: import unittest
  import sys
  from test import support
  from test.test_grammar import VALID_UNDERSCORE_LITERALS, INVALID_UNDERSCORE_LITERALS
  from random import random
  from math import atan2, isnan, copysign
  import operator
label_desc: Use image node_id 33 for calling the ComplexTest obj's underlying member method code with example usage: obj.test_neg() without return types