docs: public static void setContentLength (@Nonnull final HttpServletResponse aHttpResponse,
                                         @Nonnegative final long nContentLength)
    {
      if (nContentLength < Integer.MAX_VALUE)
        aHttpResponse.setContentLength ((int) nContentLength);
      else
        aHttpResponse.setHeader (CHttpHeader.CONTENT_LENGTH, Long.toString (nContentLength));
    }