Hello, I wonder what is the right pattern for storing/getting objects via ObjectStore interface during local backtesting? So far I haven't managed to succeed. 

In the configuration lean.json there are two options

"object-store": "QuantConnect.Lean.Engine.Storage.LocalObjectStore", "object-store-root": "/tmp/storage",

  The latter is line is added by myself (default value is './storage'). However my attempts to store anything by

pickled = codecs.encode(pickle.dumps(lr), "base64").decode() self.ObjectStore.Save("model033", pickled)

didn't result in successful `self.ObjectStore.ContainsKey('model033')`... 

In the cloud everything works like a charm. Please advise. 

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