code: public function read($path, $fileName)
      {
          $this->checkExtension();
          $file = $this->getFile($path, $fileName);
  
          $this->isExist($file);
          $this->isRead($file);
  
          $json = file_get_contents($file);
  
          return json_decode($json, true);
      }
docs: {@inheritDoc}