code: def testStartComplete(self):
      self.WIN.Start(MPI.GROUP_EMPTY)
      self.WIN.Complete()
  
imports: from mpi4py import MPI
  import mpiunittest
  import contextlib
  import arrayimpl
  import sys
label_desc: Use image node_id 15 for calling the BaseTestRMA obj's underlying member method code with example usage: obj.testStartComplete() without return types