code: public void marshall(RunTaskRequest runTaskRequest, ProtocolMarshaller protocolMarshaller) {
  
          if (runTaskRequest == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(runTaskRequest.getCluster(), CLUSTER_BINDING);
              protocolMarshaller.marshall(runTaskRequest.getTaskDefinition(), TASKDEFINITION_BINDING);
              protocolMarshaller.marshall(runTaskRequest.getOverrides(), OVERRIDES_BINDING);
              protocolMarshaller.marshall(runTaskRequest.getCount(), COUNT_BINDING);
              protocolMarshaller.marshall(runTaskRequest.getStartedBy(), STARTEDBY_BINDING);
              protocolMarshaller.marshall(runTaskRequest.getGroup(), GROUP_BINDING);
              protocolMarshaller.marshall(runTaskRequest.getPlacementConstraints(), PLACEMENTCONSTRAINTS_BINDING);
              protocolMarshaller.marshall(runTaskRequest.getPlacementStrategy(), PLACEMENTSTRATEGY_BINDING);
              protocolMarshaller.marshall(runTaskRequest.getLaunchType(), LAUNCHTYPE_BINDING);
              protocolMarshaller.marshall(runTaskRequest.getPlatformVersion(), PLATFORMVERSION_BINDING);
              protocolMarshaller.marshall(runTaskRequest.getNetworkConfiguration(), NETWORKCONFIGURATION_BINDING);
              protocolMarshaller.marshall(runTaskRequest.getTags(), TAGS_BINDING);
              protocolMarshaller.marshall(runTaskRequest.getEnableECSManagedTags(), ENABLEECSMANAGEDTAGS_BINDING);
              protocolMarshaller.marshall(runTaskRequest.getPropagateTags(), PROPAGATETAGS_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }
docs: Marshall the given parameter object.