code: def testTranslRanksProcNull(self):
      if self.GROUP == MPI.GROUP_EMPTY:
          return
      group1 = self.GROUP
      group2 = self.GROUP
      ranks1 = [MPI.PROC_NULL] * 10
      ranks2 = MPI.Group.Translate_ranks(group1, ranks1, group2)
      self.assertEqual(list(ranks1), list(ranks2))
  
imports: from mpi4py import MPI
  import mpiunittest
label_desc: Use image node_id 12 for calling the BaseTestGroup obj's underlying member method code with example usage: obj.testTranslRanksProcNull() without return types