else if (! isStrict()) return _lowerFunMap.get(name.toLowerCase());
  public AbstractFunction findFunction(String name)  {    AbstractFunction fun = _funMap.get(name);    if (fun != null)      return fun;    fun = findFunctionImpl(name);    if (fun != null) {      _funMap.put(name, fun);      return fun;    }    else if (! isStrict())      return _lowerFunMap.get(name.toLowerCase());    else      return null;  }