code: def testGetConfig(self):
      conf = mpi4py.get_config()
      self.assertIsInstance(conf, dict)
      mpicc = conf.get("mpicc")
      if mpicc is not None:
          self.assertTrue(os.path.exists(mpicc))
  
file_path: mpi4py/test/test_toplevel.py
imports: import mpi4py
  import unittest
  import warnings
  import pathlib
  import os
label_desc: Use image node_id 2 for calling the TestConfig obj's underlying member method code with example usage: obj.testGetConfig() without return types