docs: def extract_sponsor(bill):
      """
      Return a list of the fields we need to map a sponser to a bill
      """
      logger.debug("Extracting Sponsor")
      sponsor_map = []
      sponsor = bill.get('sponsor', None)
      if sponsor:
          sponsor_map.append(sponsor.get('type'))
          sponsor_map.append(sponsor.get('thomas_id'))
          sponsor_map.append(bill.get('bill_id'))
          sponsor_map.append(sponsor.get('district'))
          sponsor_map.append(sponsor.get('state'))
      logger.debug("END Extracting Sponsor")
      return sponsor_map if sponsor_map else None