code: def testTranslRanks(self):
      group1 = self.GROUP
      group2 = self.GROUP
      ranks1 = list(range(group1.Get_size())) * 3
      ranks2 = MPI.Group.Translate_ranks(group1, ranks1)
      ranks2 = MPI.Group.Translate_ranks(group1, ranks1, group2)
      self.assertEqual(list(ranks1), list(ranks2))
      group = self.GROUP
      ranks1 = list(range(group.Get_size()))
      ranks2 = group.Translate_ranks(group=group)
      self.assertEqual(list(ranks1), list(ranks2))
      ranks2 = group.Translate_ranks()
      self.assertEqual(len(ranks2), group.Get_size())
      self.assertNotIn(MPI.UNDEFINED, set(ranks2))
  
imports: from mpi4py import MPI
  import mpiunittest
label_desc: Use image node_id 11 for calling the BaseTestGroup obj's underlying member method code with example usage: obj.testTranslRanks() without return types