docs: def scan_list(self, start_time=None, end_time=None, **kwargs):
          """List scans stored in Security Center in a given time range.
  
          Time is given in UNIX timestamps, assumed to be UTC. If a `datetime` is
          passed it is converted. If `end_time` is not specified it is NOW. If
          `start_time` is not specified it is 30 days previous from `end_time`.
  
          :param start_time: start of range to filter
          :type start_time: date, datetime, int
          :param end_time: end of range to filter
          :type start_time: date, datetime, int
  
          :return: list of dictionaries representing scans
  
          """
  
          try:
              end_time = datetime.utcfromtimestamp(int(end_time))
          except TypeError:
              if end_time is None:
                  end_time = datetime.utcnow()
  
          try:
              start_time = datetime.utcfromtimestamp(int(start_time))
          except TypeError:
              if start_time is None:
                  start_time = end_time - timedelta(days=30)
  
          data = {"startTime": calendar.timegm(start_time.utctimetuple()),
                  "endTime": calendar.timegm(end_time.utctimetuple())}
          data.update(kwargs)
  
          result = self.raw_query("scanResult", "getRange", data=data)
          return result["scanResults"]