code: public function getInitialRole()
      {
          $roles = [];
          foreach (Yii::$app->collectors['roles']->getAll() as $roleItem) {
              $test = $roleItem->level < 400;
              if ($test) {
                  $roles[] = $roleItem->object->primaryKey;
              }
          }
  
          return $roles;
      }
docs: Get initial role.
  
  @return [[@doctodo return_type:getInitialRole]] [[@doctodo return_description:getInitialRole]]