class_docstr: Mapper that leverages parallelpython (i.e. pp) maps.
      
class_docstr_tok: ["Mapper","that","leverages","parallelpython","(","i.e",".","pp",")","maps","."]
docstr: cleanup the closed worker processes
docstr_tok: ["cleanup","the","closed","worker","processes"]
code: def join(self):
      "cleanup the closed worker processes"
      _pool = __STATE.get(self._id, None)
      if self._equals(_pool):
          self._is_alive(_pool, negate=True, run=False)
          _pool.destroy()
          self._exiting = True  # i.e. is destroyed
      return
  
imports: from pathos.helpers import parallelpython
  from pathos.helpers import cpu_count
  import builtins
  from pathos.abstract_launcher import AbstractWorkerPool
  from pathos.helpers.pp_helper import ApplyResult, MapResult
label_desc: Use image node_id 20 for calling the ParallelPool obj's underlying member method code with example usage: obj.join() without return types