docs: public void marshall(WorkflowExecutionOpenCounts workflowExecutionOpenCounts, ProtocolMarshaller protocolMarshaller) {
  
          if (workflowExecutionOpenCounts == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(workflowExecutionOpenCounts.getOpenActivityTasks(), OPENACTIVITYTASKS_BINDING);
              protocolMarshaller.marshall(workflowExecutionOpenCounts.getOpenDecisionTasks(), OPENDECISIONTASKS_BINDING);
              protocolMarshaller.marshall(workflowExecutionOpenCounts.getOpenTimers(), OPENTIMERS_BINDING);
              protocolMarshaller.marshall(workflowExecutionOpenCounts.getOpenChildWorkflowExecutions(), OPENCHILDWORKFLOWEXECUTIONS_BINDING);
              protocolMarshaller.marshall(workflowExecutionOpenCounts.getOpenLambdaFunctions(), OPENLAMBDAFUNCTIONS_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }