function testReify()
 {
     $_SESSION['test'] = 'MemModel reify test';
     $model = new MemModel();
     $model->setbaseURI("http://www.bizer.de");
     $myhomepage = new Resource("http://www.bizer.de/welcome.html");
     $creator = new Resource("http://purl.org/dc/elements/1.1/creator");
     $me = new Resource("mailto:chris@bizer.de");
     $model->add(new Statement($myhomepage, $creator, $me));
     $creation_date = new Resource("http://www.example.org/terms/creation-date");
     $August16 = new Literal("August 16, 2002");
     $model->add(new Statement($myhomepage, $creation_date, $August16));
     $language = new Resource("http://www.example.org/terms/language");
     $deutsch = new Literal("Deutsch", "de");
     $model->add(new Statement($myhomepage, $language, $deutsch));
     $model2 =& $model->reify();
     $this->assertEqual(12, $model2->size());
 }