code: public function getTargetLabel()
      {
          if (!isset($this->labels[$this->target])) {
              return ['long' => 'unknown', 'short' => 'unknown'];
          }
  
          return $this->labels[$this->target];
      }
docs: Get target label.
  
  @return [[@doctodo return_type:getTargetLabel]] [[@doctodo return_description:getTargetLabel]]