code: public static final String getLocaleExtendedName(String lookup, String locale) {
  
          StringBuffer result = new StringBuffer(32);
          result.append(lookup);
          result.append('_');
          result.append(locale);
          return result.toString();
      }
docs: Returns the locale extended name for the given lookup String.<p>
  
  @param lookup the lookup String
  @param locale the locale
  
  @return the locale extended name for the given lookup String