code: def tearDown(self):
      self.WIN.Free()
      if self.mpi_memory:
          MPI.Free_mem(self.mpi_memory)
  
imports: from mpi4py import MPI
  import mpiunittest
  import contextlib
  import arrayimpl
label_desc: Use image node_id 2 for calling the BaseTestRMA obj's underlying member method code with example usage: obj.tearDown() without return types