/**
  * @depends testSubTestCenter
  * @param $subTestCenterClass
  * @return \core_kernel_classes_Class
  */
 public function testSubTCInstance($subTestCenterClass)
 {
     $subTCInstanceLabel = 'subTC instance';
     $subTCInstance = $this->testCenterService->createInstance($subTestCenterClass);
     $this->assertTrue(defined('RDFS_LABEL'));
     $subTCInstance->removePropertyValues(new core_kernel_classes_Property(RDFS_LABEL));
     $subTCInstance->setLabel($subTCInstanceLabel);
     $this->assertInstanceOf('core_kernel_classes_Resource', $subTCInstance);
     $this->assertEquals($subTCInstanceLabel, $subTCInstance->getLabel());
     $subTCInstanceLabel2 = 'my sub TC instance';
     $subTCInstance->setLabel($subTCInstanceLabel2);
     $this->assertEquals($subTCInstanceLabel2, $subTCInstance->getLabel());
     return $subTCInstance;
 }