/**
  * @param DocsRunner $runner
  */
 public function __construct(DocsRunner $runner)
 {
     parent::__construct('testDocExample');
     $this->runner = $runner;
     if (!file_exists($runner->getAbsoluteDocFilepath())) {
         throw new \InvalidArgumentException('Document file not found: ' . $runner->getAbsoluteDocFilepath());
     }
 }