public void crawl(final String sessionId) {
        final List<DataConfig> configList = ComponentUtil.getCrawlingConfigHelper().getAllDataConfigList();

        if (configList.isEmpty()) {
            // nothing
            if (logger.isInfoEnabled()) {
                logger.info("No crawling target data.");
            }
            return;
        }

        doCrawl(sessionId, configList);
    }

        // nothing
    }

    @Override
    public void invokeQuery(String columnFlexibleName, String conditionKeyName, Object conditionValue, ConditionOption conditionOption) {
        // nothing
    }

    @Override
    public void invokeQueryEqual(String columnFlexibleName, Object conditionValue) {
        // nothing
    }

    @Override

        // nothing
    }

    @Override
    public void invokeQuery(String columnFlexibleName, String conditionKeyName, Object conditionValue, ConditionOption conditionOption) {
        // nothing
    }

    @Override
    public void invokeQueryEqual(String columnFlexibleName, Object conditionValue) {
        // nothing
    }

    @Override

        // nothing
    }

    @Override
    public void invokeQuery(String columnFlexibleName, String conditionKeyName, Object conditionValue, ConditionOption conditionOption) {
        // nothing
    }

    @Override
    public void invokeQueryEqual(String columnFlexibleName, Object conditionValue) {
        // nothing
    }

    @Override

        // do nothing
    }

    @Override
    public void xsetupForQueryInsert() {
        // do nothing
    }

    @Override
    public void xsetupForSpecifiedUpdate() {
        // do nothing
    }

    @Override
    public void xsetupForVaryingUpdate() {
        // do nothing
    }

    @Override
    public void enableThatsBadTiming() {
        // do nothing
    }

    }

    protected void buildVirtualHostQuery(final QueryContext queryContext, final SearchRequestType searchRequestType) {
        switch (searchRequestType) {
        case ADMIN_SEARCH:
            // nothing to do
            break;
        default:
            final String key = ComponentUtil.getVirtualHostHelper().getVirtualHostKey();
            if (StringUtil.isNotBlank(key)) {

    }

    private void upgradeFrom13_7() {
        // nothing
    }

    private void upgradeFrom13_8() {
        // nothing
    }

    private void upgradeFrom13_9() {
        // nothing
    }

    private void upgradeFrom13_10() {
        // nothing
    }

    private void upgradeFrom13_11() {
        // nothing
    }

      by You to the Licensor shall be under the terms and conditions of
      this License, without any additional terms or conditions.
      Notwithstanding the above, nothing herein shall supersede or modify
      the terms of any separate license agreement you may have executed
      with Licensor regarding such Contributions.

        @Option(name = "-p", aliases = "--properties", metaVar = "properties", usage = "Properties File")
        protected String propertiesPath;

        protected Options() {
            // nothing
        }

        @Override
        public String toString() {
            return "Options [sessionId=" + sessionId + ", name=" + name + ", propertiesPath=" + propertiesPath + "]";
        }
    }

        // do nothing
    }

    @Override
    public void xsetupForQueryInsert() {
        // do nothing
    }

    @Override
    public void xsetupForSpecifiedUpdate() {
        // do nothing
    }

    @Override
    public void xsetupForVaryingUpdate() {
        // do nothing
    }

    @Override
    public void enableThatsBadTiming() {
        // do nothing
    }