code: private Locale extractLocale() {
  
          Locale loc = null;
          int underscore = m_name.lastIndexOf("_");
          if (underscore > -1) {
              String localeName = m_name.substring(underscore + 1);
              if (localeName.lastIndexOf(".") > -1) {
                  localeName = localeName.substring(0, localeName.lastIndexOf("."));
              }
              loc = CmsLocaleManager.getLocale(localeName);
          }
  
          return loc;
      }
docs: Extracts the locale from the decoration filename.<p>
  
  @return locale extraced form filename or null