code: def make_intercomm(basecomm):
      size = basecomm.Get_size()
      rank = basecomm.Get_rank()
      if size == 1:
          raise unittest.SkipTest("comm.size==1")
      if rank < size // 2:
          COLOR = 0
          local_leader = 0
          remote_leader = size // 2
      else:
          COLOR = 1
          local_leader = 0
          remote_leader = 0
      basecomm.Barrier()
      intracomm = basecomm.Split(COLOR, key=0)
      intercomm = MPI.Intracomm.Create_intercomm(
          intracomm, local_leader, basecomm, remote_leader
      )
      intracomm.Free()
      if isinstance(basecomm, pkl5.Intracomm):
          intercomm = pkl5.Intercomm(intercomm)
      return intercomm, COLOR
  
imports: from mpi4py import MPI
  from mpi4py.util import pkl5
  import sys, os
label_desc: Use image node_id 23 for calling the BaseTest obj's underlying member method code with example usage: obj.make_intercomm(basecomm) and returns: intercomm,  COLOR