code: def _load_version(cls, unpickler, version):
          
          state, _exclude, _features = unpickler.load()
  
          features = state['features']
          excluded_features = state['excluded_features']
  
          model = cls.__new__(cls)
          model._setup()
          model.__proxy__.update(state)
          model._exclude = _exclude
          model._features = _features
  
          return model
docs: A function to load a previously saved SentenceSplitter instance.
  
          Parameters
          ----------
          unpickler : GLUnpickler
              A GLUnpickler file handler.
  
          version : int
              Version number maintained by the class writer.