code: public function canBeReviewedBy(Member $member = null)
      {
          if (!$this->owner->obj("NextReviewDate")->exists()) {
              return false;
          }
  
          if ($this->owner->obj("NextReviewDate")->InFuture()) {
              return false;
          }
  
          $options = $this->getOptions();
  
          if (!$options) {
              return false;
          }
  
          if (!$options
              // Options can be a SiteConfig with different extension applied
              || (!$options->hasExtension(__CLASS__)
                  && !$options->hasExtension(ContentReviewDefaultSettings::class))
          ) {
              return false;
          }
  
          if ($options->OwnerGroups()->count() == 0 && $options->OwnerUsers()->count() == 0) {
              return false;
          }
  
          if (!$member) {
              return true;
          }
  
          if ($member->inGroups($options->OwnerGroups())) {
              return true;
          }
  
          if ($options->OwnerUsers()->find("ID", $member->ID)) {
              return true;
          }
  
          return false;
      }
docs: Check if a review is due by a member for this owner.
  
  @param Member $member
  
  @return bool