/**
  * @return \core_kernel_classes_Class|null
  */
 public function testClassCreate()
 {
     $this->assertTrue(defined('TAO_ITEM_CLASS'));
     $ItemClass = $this->itemsService->getRootClass();
     $this->assertIsA($ItemClass, 'core_kernel_classes_Class');
     $this->assertEquals(TAO_ITEM_CLASS, $ItemClass->getUri());
     return $ItemClass;
 }