code: def get_session(self, autocommit=True):
      raise NotImplementedError
  
imports: from aim.storage.structured.entities import ObjectFactory, Run, Experiment, Tag, RunCollection, ExperimentCollection, TagCollection
  from aim.storage.structured.sql_engine.entities import ModelMappedRun, ModelMappedExperiment, ModelMappedTag
  from typing import List
  from datetime import datetime
label_desc: Use image node_id 20 for calling the ModelMappedFactory obj's underlying member method code with example usage: obj.get_session(autocommit) without return types