/**
     * Deletes documents matching the specified search parameters.
     *
     * @param request The HTTP servlet request
     * @param params The search request parameters to identify documents to delete
     * @return Number of documents deleted
     */
    public long deleteByQuery(final HttpServletRequest request, final SearchRequestParams params) {

    public String getUsername() {
        return getRequestManager().findUserBean(FessUserBean.class).map(FessUserBean::getUserId).orElse(Constants.GUEST_USER);
    }

    /**
     * Gets the request manager.
     *
     * @return The request manager.
     */
    protected RequestManager getRequestManager() {
        return ComponentUtil.getRequestManager();
    }

    /**
     * Gets the current time as a Date object.

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### Translations

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