code: public ChannelBuffer formatQueryStatsV1(final Map<String, Object> query_stats) {
      throw new BadRequestException(HttpResponseStatus.NOT_IMPLEMENTED, 
          "The requested API endpoint has not been implemented", 
          this.getClass().getCanonicalName() + 
          " has not implemented formatQueryStatsV1");
    }
docs: Format the query stats
  @param query_stats Map of query statistics
  @return A ChannelBuffer object to pass on to the caller
  @throws BadRequestException if the plugin has not implemented this method
  @since 2.2