code: private String replaceVars(final String langValue) {
          String ret = StringUtils.replace(langValue, "${servePath}", Latkes.getServePath());
          ret = StringUtils.replace(ret, "${staticServePath}", Latkes.getStaticServePath());
  
          return ret;
      }
docs: Replaces all variables of the specified language value.
  
  <p>
  Variables:
  <ul>
  <li>${servePath}</li>
  <li>${staticServePath}</li>
  </ul>
  </p>
  
  @param langValue the specified language value
  @return replaced value