code: def quantile_loss(
      y_true: np.array, y_pred: np.array, quantile: float
  ):
      """Qauntile loss of Pinball loss function."""
  
      res = y_true - y_pred
      res[res >= 0] = res[res >= 0] * quantile
      res[res < 0] = res[res < 0] * (quantile - 1)
      return np.mean(res)
  
label_desc: Use image node_id 1 for calling a global function with example usage: quantile_loss(y_true, y_pred, quantile) and returns: np