code: @Override
      public void execute()
      {
          try {
              if (isCreateMode()) {
                  execute4NoInstance();
              } else {
                  final List<Instance> instances = getInstanceList();
                  if (instances.isEmpty() && isEditMode()) {
                      execute4NoInstance();
                  } else {
                      execute4Instance(instances);
                  }
              }
          } catch (final EFapsException e) {
              throw new RestartResponseException(new ErrorPage(e));
          }
          super.setInitialized(true);
      }
docs: {@inheritDoc}