value = _lowerConstMap.get(name.toLowerCase());  if (value != null) return value;
  public Value getConstant(String name)  {    Value value = _constMap.get(name);    if (value != null)      return value;    else {      /* XXX:      notice(L.l("Converting undefined constant '{0}' to string.",		 name));      */      value = new StringValue(name);      // XXX:      _constMap.put(name, value);      return value;    }  }