code: public void marshall(Action action, ProtocolMarshaller protocolMarshaller) {
  
          if (action == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(action.getJobName(), JOBNAME_BINDING);
              protocolMarshaller.marshall(action.getArguments(), ARGUMENTS_BINDING);
              protocolMarshaller.marshall(action.getTimeout(), TIMEOUT_BINDING);
              protocolMarshaller.marshall(action.getNotificationProperty(), NOTIFICATIONPROPERTY_BINDING);
              protocolMarshaller.marshall(action.getSecurityConfiguration(), SECURITYCONFIGURATION_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }
docs: Marshall the given parameter object.