*
     * @param keyMatch The KeyMatch instance.
     * @return A list of boosted documents.
     */
    public List<Map<String, Object>> getBoostedDocumentList(final KeyMatch keyMatch) {
        final SearchEngineClient searchEngineClient = ComponentUtil.getSearchEngineClient();
        String virtualHost = keyMatch.getVirtualHost();
        if (StringUtil.isBlank(virtualHost)) {