code: public static String clear(String text) {
          text = StringCleaner.tokenizeURLs(text);
          text = StringCleaner.tokenizeSmileys(text);
          text = StringCleaner.removeAccents(text);
          text = StringCleaner.removeSymbols(text);
          text = StringCleaner.removeExtraSpaces(text);
          
          return text.toLowerCase(Locale.ENGLISH);
      }
docs: Convenience method which tokenizes the URLs and the SMILEYS_MAPPING, removes accents
  and symbols and eliminates the extra spaces from the provided text.
  
  @param text
  @return