code: def metrics():
      return [
          "train_loss",
          "eval_loss",
          "bleu",
          "eval_accuracy",
          "train_accuracy",
          "uptime",
          "steps_per_sec",
          "train_learning_rate",
      ]
  
label_desc: Use image node_id 2 for calling a global function with example usage: metrics() and returns: list