private function areSkillLevelThresholdsMissing()
 {
     if ($this->object->isDynamicTest()) {
         $questionSetConfig = $this->testQuestionSetConfigFactory->getQuestionSetConfig();
         $questionContainerId = $questionSetConfig->getSourceQuestionPoolId();
     } else {
         $questionContainerId = $this->object->getId();
     }
     global $ilDB;
     require_once 'Modules/TestQuestionPool/classes/class.ilAssQuestionSkillAssignmentList.php';
     require_once 'Modules/Test/classes/class.ilTestSkillLevelThreshold.php';
     $assignmentList = new ilAssQuestionSkillAssignmentList($ilDB);
     $assignmentList->setParentObjId($questionContainerId);
     $assignmentList->loadFromDb();
     foreach ($assignmentList->getUniqueAssignedSkills() as $data) {
         foreach ($data['skill']->getLevelData() as $level) {
             $treshold = new ilTestSkillLevelThreshold($ilDB);
             $treshold->setTestId($this->object->getTestId());
             $treshold->setSkillBaseId($data['skill_base_id']);
             $treshold->setSkillTrefId($data['skill_tref_id']);
             $treshold->setSkillLevelId($level['id']);
             if (!$treshold->dbRecordExists()) {
                 return true;
             }
         }
     }
     return false;
 }
 private function getUniqueAssignedSkillsStats()
 {
     require_once 'Modules/TestQuestionPool/classes/class.ilAssQuestionSkillAssignmentList.php';
     $assignmentList = new ilAssQuestionSkillAssignmentList($this->myDb);
     $assignmentList->setParentObjId($this->poolId);
     $assignmentList->loadFromDb();
     $assignmentList->loadAdditionalSkillData();
     return $assignmentList->getUniqueAssignedSkills();
 }