code: def model(self):
      return self._model
  
file_path: mars/mars/learn/contrib/statsmodels/api.py
imports: import pickle
  from .train import StatsModelsTrain
  from .predict import StatsModelsPredict
label_desc: Use image node_id 2 for calling the MarsResults obj's underlying member method code with example usage: obj.model() and returns: self