code: public void marshall(PendingMaintenanceAction pendingMaintenanceAction, ProtocolMarshaller protocolMarshaller) {
  
          if (pendingMaintenanceAction == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(pendingMaintenanceAction.getAction(), ACTION_BINDING);
              protocolMarshaller.marshall(pendingMaintenanceAction.getDescription(), DESCRIPTION_BINDING);
              protocolMarshaller.marshall(pendingMaintenanceAction.getCurrentApplyDate(), CURRENTAPPLYDATE_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }
docs: Marshall the given parameter object.