code: def test_add(self):
      stream = StringIO()
      stats = pstats.Stats(stream=stream)
      stats.add(self.stats, self.stats)
  
imports: import unittest
  from test import support
  from io import StringIO
  from pstats import SortKey
  from enum import StrEnum, _test_simple_enum
  import os
  import pstats
  import tempfile
  import cProfile
label_desc: Use image node_id 2 for calling the StatsTestCase obj's underlying member method code with example usage: obj.test_add() without return types