code: def limit_by_metric(self):
      """Takes as input metric, threshold, and loss and
      and returs a True if metric threshold have been
      met and False if not.
  
      USE: space.check_metric(model_history)
      """
  
      metric = self.performance_target[0]
      threshold = self.performance_target[1]
      loss = self.performance_target[2]
  
      if loss is True:
          return self.model_history.history[metric][-1] <= threshold
      elif loss is False:
          return self.model_history.history[metric][-1] >= threshold
  
label_desc: Use image node_id 1 for calling a global function with example usage: limit_by_metric() and returns: unknown, unknown