docs: def get_active_channels_by_year_quarter(
              self, channel_type, year, quarter, expires=None):
          """
          Search for all active channels by year and quarter
          """
          if expires is None:
              # Set expires_after to midnight of current day
              expires = datetime.combine(datetime.utcnow().date(), time.min)
  
          return self.search_channels(
              type=channel_type, tag_year=year, tag_quarter=quarter,
              expires_after=expires.isoformat())