result.add(map);
            try {
                result.addAll(getAllAvailableArtifacts());
            } catch (final Exception e) {
                saveError(messages -> messages.addErrorsFailedToFindPlugins(GLOBAL));
                logger.warn("Failed to access a plugin repository.", e);
            }
            RenderDataUtil.register(data, "availableArtifactItems", result);

     * message: Could not find available plugins.
     * </pre>
     * @param property The property name for the message. (NotNull)
     * @return this. (NotNull)
     */
    public FessMessages addErrorsFailedToFindPlugins(String property) {
        assertPropertyNotNull(property);
        add(property, new UserMessage(ERRORS_failed_to_find_plugins));
        return this;
    }

    /**