/**
* @depends testClassCreate
* @param $ItemClass
* @return \core_kernel_classes_Class
*/
public function testSubClassCreate($ItemClass)
{
$subItemClassLabel = 'subItem class';
$subItemClass = $this->itemsService->createSubClass($ItemClass, $subItemClassLabel);
$this->assertIsA($subItemClass, 'core_kernel_classes_Class');
$this->assertEquals($subItemClassLabel, $subItemClass->getLabel());
return $subItemClass;
}