public function getComponents()
 {
     $parentComponents = parent::getComponents();
     return new QtiComponentCollection(array_merge($parentComponents->getArrayCopy(), $this->getSimpleChoices()->getArrayCopy()));
 }
 public function getComponents()
 {
     return parent::getComponents();
 }
 public function getComponents()
 {
     $parentComponents = parent::getComponents();
     return new QtiComponentCollection(array_merge($parentComponents->getArrayCopy(), array($this->getObject())));
 }