if (extension != null) requestURL.setResource(getId() + "." + extension); else requestURL.setResource(getId());
requestURL.setResource(getId());
    public SimpleURL getURL() {        RequestURL requestURL = (RequestURL)getPropertyService().getProperty("request.url");        requestURL = (RequestURL) requestURL.clone();        requestURL.setEpoch(getEpoch());        if (extension != null)            requestURL.setResource(getId() + "." + extension);        else            requestURL.setResource(getId());        return requestURL;    }