public function isDefault()
    {
         return $this->getMaxAttempts() === 1 &&
                 $this->mustShowFeedback() === false &&
                 $this->doesAllowReview() === true &&
                 $this->mustShowSolution() === false &&
                 $this->doesAllowComment() === false &&
                 $this->mustValidateResponses() === false &&
                 $this->doesAllowSkipping() === true;
    }