class_docstr: Mapper that leverages python's multiprocessing.
      
code: def apipe(self, f, *args, **kwds):  # register a callback ?
      # AbstractWorkerPool._AbstractWorkerPool__apipe(self, f, *args, **kwds)
      _pool = self._serve()
      with warnings.catch_warnings():
          if not OLD312a7:
              warnings.filterwarnings(
                  "ignore", category=DeprecationWarning
              )
          return _pool.apply_async(f, args, kwds)
  
imports: from pathos.abstract_launcher import AbstractWorkerPool
  from pathos.helpers.mp_helper import starargs
  from pathos.helpers import cpu_count, freeze_support, ProcessPool
  import warnings
  import sys
  from pathos.helpers import ThreadPool
  from pathos.threading import ThreadPool
label_desc: Use image node_id 9 for calling the ProcessPool obj's underlying member method code with example usage: obj.apipe(f) and returns: _pool