new_contents: import pickle
  
  from metadatastore.mds import MDS
  
  
  def test_pickle():
      md = MDS(config={'host': 'portland'}, version=1)
      md2 = pickle.loads(pickle.dumps(md))
  
      assert md.version == md2.version
      assert md.config == md2.config
  
subject: add pickling test