code: public static void forCssString(Writer out, String input)
          throws IOException
      {
          encode(Encoders.CSS_STRING_ENCODER, out, input);
      }
docs: See {@link #forCssString(String)} for description of encoding.  This
  version writes directly to a Writer without an intervening string.
  
  @param out where to write encoded output
  @param input the input string to encode
  @throws IOException if thrown by writer