class_docstr: MongoDB TaskRecord backend.
class_docstr_tok: ["MongoDB","TaskRecord","backend","."]
code: def _binary_buffers(self, rec):
      for key in ("buffers", "result_buffers"):
          if rec.get(key, None):
              rec[key] = list(map(Binary, rec[key]))
      return rec
  
file_path: ipyparallel/ipyparallel/controller/mongodb.py
imports: from traitlets import Dict, Instance, List, Unicode
  from .dictdb import BaseDB
label_desc: Use image node_id 2 for calling the MongoDB obj's underlying member method code with example usage: obj._binary_buffers(rec) and returns: rec