docstr: Schedule a func to be run
docstr_tok: ["Schedule","a","func","to","be","run"]
code: def apply_async(self, func, callback=None):
      """Schedule a func to be run"""
      future = self._view.apply_async(func)
      if callback:
          future.add_done_callback(lambda f: callback(f.result()))
      return future
  
file_path: ipyparallel/ipyparallel/client/_joblib.py
imports: from joblib.parallel import AutoBatchingMixin, ParallelBackendBase
  import ipyparallel
label_desc: Use image node_id 4 for calling the IPythonParallelBackend obj's underlying member method code with example usage: obj.apply_async(func, callback) and returns: future