docstr: Pickle and unpickle an object using ``pickle.dumps`` / ``pickle.loads``
code: def _get_nobj_bytes(self, obj, dump_kwargs, load_kwargs):
      """
      Pickle and unpickle an object using ``pickle.dumps`` / ``pickle.loads``
      """
      pkl = pickle.dumps(obj, **dump_kwargs)
      return pickle.loads(pkl, **load_kwargs)
  
imports: from __future__ import unicode_literals
  import os
  import time
  import subprocess
  import warnings
  import tempfile
  import pickle
  import pytest
label_desc: Use image node_id 1 for calling the PicklableMixin obj's underlying member method code with example usage: obj._get_nobj_bytes(obj, dump_kwargs, load_kwargs) and returns: pickle