code: public static String fixLanguageCodeIfDeprecated(String wikimediaLanguageCode) {
  		if (DEPRECATED_LANGUAGE_CODES.containsKey(wikimediaLanguageCode)) {
  			return DEPRECATED_LANGUAGE_CODES.get(wikimediaLanguageCode);
  		} else {
  			return wikimediaLanguageCode;
  		}
  	}
docs: Translate a Wikimedia language code to its preferred value
  if this code is deprecated, or return it untouched if the string
  is not a known deprecated Wikimedia language code
  
  @param wikimediaLanguageCode
  the language code as used by Wikimedia
  @return
  the preferred language code corresponding to the original language code