public function getUserQuizStateAnswersCount(AccountInterface $account, UserQuizStatusInterface $state)
{
$answerStorage = static::entityTypeManager()->getStorage('answer');
$query = $answerStorage->getQuery();
$aids = $query->Condition('user_id', $account->id())->Condition('question', $this->id())->Condition('user_quiz_status', $state->id())->execute();
return count($aids);
}
