docs: @Nullable
    public static Cookie [] getRequestCookies (@Nullable final HttpServletRequest aRequest)
    {
      Cookie [] ret = null;
      if (aRequest != null)
        try
        {
          ret = aRequest.getCookies ();
        }
        catch (final Exception ex)
        {
          // fall through
          if (isLogExceptions ())
            if (LOGGER.isWarnEnabled ())
              LOGGER.warn ("[ServletHelper] Failed to determine cookies of HTTP request", ex);
        }
      return ret;
    }