docs: def find_by_campaign(campaign_id, _connection=None, page_size=100,
          page_number=0, sort_by=enums.DEFAULT_SORT_BY,
          sort_order=enums.DEFAULT_SORT_ORDER):
          """
          List all videos for a given campaign.
          """
          return connection.ItemResultSet(
              'find_videos_by_campaign_id', Video, _connection, page_size,
              page_number, sort_by, sort_order, campaign_id=campaign_id)