code: def testGetProcNull(self):
      self.WIN.Fence()
      self.WIN.Get(None, MPI.PROC_NULL, None)
      self.WIN.Fence()
  
imports: from mpi4py import MPI
  import mpiunittest
  import contextlib
  import arrayimpl
  import sys
label_desc: Use image node_id 9 for calling the BaseTestRMA obj's underlying member method code with example usage: obj.testGetProcNull() without return types