code: def testGetFailed(self):
      comm = self.COMM
      group = comm.Get_failed()
      gcmp = MPI.Group.Compare(group, MPI.GROUP_EMPTY)
      group.Free()
      self.assertIn(gcmp, [MPI.IDENT, MPI.CONGRUENT])
  
imports: from mpi4py import MPI
  import mpiunittest
  import warnings
  import struct
label_desc: Use image node_id 5 for calling the BaseTestULFM obj's underlying member method code with example usage: obj.testGetFailed() without return types