code: public void marshall(CountOpenWorkflowExecutionsRequest countOpenWorkflowExecutionsRequest, ProtocolMarshaller protocolMarshaller) {
  
          if (countOpenWorkflowExecutionsRequest == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(countOpenWorkflowExecutionsRequest.getDomain(), DOMAIN_BINDING);
              protocolMarshaller.marshall(countOpenWorkflowExecutionsRequest.getStartTimeFilter(), STARTTIMEFILTER_BINDING);
              protocolMarshaller.marshall(countOpenWorkflowExecutionsRequest.getTypeFilter(), TYPEFILTER_BINDING);
              protocolMarshaller.marshall(countOpenWorkflowExecutionsRequest.getTagFilter(), TAGFILTER_BINDING);
              protocolMarshaller.marshall(countOpenWorkflowExecutionsRequest.getExecutionFilter(), EXECUTIONFILTER_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }
docs: Marshall the given parameter object.