code: def load_params_from_file(self, fname: str):
          
          utils.check_condition(os.path.exists(fname), "No model parameter file found under %s. "
                                                       "This is either not a model directory or the first training "
                                                       "checkpoint has not happened yet." % fname)
          self.params, self.aux_params = utils.load_params(fname)
          utils.check_condition(all(name.startswith(self.prefix) for name in self.params.keys()),
                                "Not all parameter names start with model prefix '%s'" % self.prefix)
          utils.check_condition(all(name.startswith(self.prefix) for name in self.aux_params.keys()),
                                "Not all auxiliary parameter names start with model prefix '%s'" % self.prefix)
          logger.info('Loaded params from "%s"', fname)
docs: Loads and sets model parameters from file.
  
          :param fname: Path to load parameters from.