docs: public void marshall(ServiceStatistics serviceStatistics, ProtocolMarshaller protocolMarshaller) {
  
          if (serviceStatistics == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(serviceStatistics.getOkCount(), OKCOUNT_BINDING);
              protocolMarshaller.marshall(serviceStatistics.getErrorStatistics(), ERRORSTATISTICS_BINDING);
              protocolMarshaller.marshall(serviceStatistics.getFaultStatistics(), FAULTSTATISTICS_BINDING);
              protocolMarshaller.marshall(serviceStatistics.getTotalCount(), TOTALCOUNT_BINDING);
              protocolMarshaller.marshall(serviceStatistics.getTotalResponseTime(), TOTALRESPONSETIME_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }