public Value session_cache_expire(Env env, @Optional String newValue)
public Value session_cache_expire(Env env, @Optional LongValue newValue)
  public Value session_cache_expire(Env env, @Optional String newValue)  {    Value value = env.getIni("session.cache_expire");    if (newValue == null || newValue.length() == 0)      return value;    env.setIni("session.cache_expire", newValue);    return value;  }