code: def download_and_clean_data(self):
      vix_df = self.download_data(
          ["VIXY"], self.start, self.end, self.time_interval
      )
      return self.clean_data(vix_df)
  
imports: from __future__ import annotations
  from concurrent.futures import ProcessPoolExecutor
  from concurrent.futures import ThreadPoolExecutor
  import alpaca_trade_api
  import exchange_calendars
  import numpy
  import pandas
  import pytz
  from stockstats import StockDataFrame
label_desc: Use image node_id 7 for calling the AlpacaProcessor obj's underlying member method code with example usage: obj.download_and_clean_data() and returns: self