docs: public void marshall(Cluster cluster, ProtocolMarshaller protocolMarshaller) {
  
          if (cluster == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(cluster.getClusterArn(), CLUSTERARN_BINDING);
              protocolMarshaller.marshall(cluster.getClusterName(), CLUSTERNAME_BINDING);
              protocolMarshaller.marshall(cluster.getStatus(), STATUS_BINDING);
              protocolMarshaller.marshall(cluster.getRegisteredContainerInstancesCount(), REGISTEREDCONTAINERINSTANCESCOUNT_BINDING);
              protocolMarshaller.marshall(cluster.getRunningTasksCount(), RUNNINGTASKSCOUNT_BINDING);
              protocolMarshaller.marshall(cluster.getPendingTasksCount(), PENDINGTASKSCOUNT_BINDING);
              protocolMarshaller.marshall(cluster.getActiveServicesCount(), ACTIVESERVICESCOUNT_BINDING);
              protocolMarshaller.marshall(cluster.getStatistics(), STATISTICS_BINDING);
              protocolMarshaller.marshall(cluster.getTags(), TAGS_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }