code: def ticker_list_small():
      return ["AAPL", "GOOG"]
  
imports: from __future__ import annotations
  import os
  from typing import List
  import pandas
  import pytest
  from finrl import config
  from finrl import config_tickers
  from finrl.config import DATA_SAVE_DIR
  from finrl.config import RESULTS_DIR
  from finrl.config import TENSORBOARD_LOG_DIR
  from finrl.config import TRAINED_MODEL_DIR
  from finrl.main import check_and_make_directories
  from finrl.meta.preprocessor.preprocessors import FeatureEngineer
  from finrl.meta.preprocessor.yahoodownloader import YahooDownloader
label_desc: Use image node_id 3 for calling a global function with example usage: ticker_list_small() and returns: list