code: public void marshall(Step step, ProtocolMarshaller protocolMarshaller) {
  
          if (step == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(step.getId(), ID_BINDING);
              protocolMarshaller.marshall(step.getName(), NAME_BINDING);
              protocolMarshaller.marshall(step.getConfig(), CONFIG_BINDING);
              protocolMarshaller.marshall(step.getActionOnFailure(), ACTIONONFAILURE_BINDING);
              protocolMarshaller.marshall(step.getStatus(), STATUS_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }
docs: Marshall the given parameter object.