public function getRelativeComplementCollection(self $questionCollection)
{
$questionIds = array_flip($questionCollection->getInvolvedQuestionIds());
$relativeComplementCollection = new self();
foreach ($this->getQuestions() as $question) {
if (!isset($questionIds[$question->getQuestionId()])) {
$relativeComplementCollection->addQuestion($question);
}
}
return $relativeComplementCollection;
}
protected function handleQuestionOrdering(ilTestRandomQuestionSetQuestionCollection $questionSet)
{
if ($this->testOBJ->getShuffleQuestions()) {
$questionSet->shuffleQuestions();
}
}
