code: public function offsetGet($offset)
      {
          $worker = json_decode($this->client->workers($offset), true) ?: [];
  
          $worker['jobs'] = $worker['jobs'] ?? [];
          $worker['stalled'] = $worker['stalled'] ?? [];
  
  
          return $worker;
      }
docs: {@inheritdoc}
  
  @param  string $offset
  @return array