docs: public void marshall(Step step, ProtocolMarshaller protocolMarshaller) {
  
          if (step == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(step.getStepName(), STEPNAME_BINDING);
              protocolMarshaller.marshall(step.getStartTime(), STARTTIME_BINDING);
              protocolMarshaller.marshall(step.getStatus(), STATUS_BINDING);
              protocolMarshaller.marshall(step.getEndTime(), ENDTIME_BINDING);
              protocolMarshaller.marshall(step.getLogUrl(), LOGURL_BINDING);
              protocolMarshaller.marshall(step.getArtifactsUrl(), ARTIFACTSURL_BINDING);
              protocolMarshaller.marshall(step.getScreenshots(), SCREENSHOTS_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }