code: protected function handleParam()
      {
          if (preg_match('/^@([0-9]+)=(.*)$/', $this->getNextLine(self::LINE_TYPE_ANY), $part)) {
              $paramValue = trim($part[2], "'");
  
              return [$part[1] => $paramValue];
          }
  
          return null;
      }
docs: Handles a param, if the next line isn't a param, returns null.
  
  @return array|null