code: def load(self, filename, fv_extern=None):
          
          self.modelparams["mdl_stored_file"] = filename
          if fv_extern is not None:
              self.modelparams["fv_extern"] = fv_extern
  
          # segparams['modelparams'] = {
          #     'mdl_stored_file': mdl_stored_file,
          #     # 'fv_extern': fv_function
          # }
          self.mdl = Model(modelparams=self.modelparams)
docs: Read model stored in the file.
  
          :param filename: Path to file with model
          :param fv_extern: external feature vector function is passed here
          :return: