public function loadBootstrap()
    {
        if (null !== ($file = $this->getBootstrapFile())) {
            if (false === file_exists($file)) {
                throw new InvalidArgumentException(
                    sprintf(
                        'The bootstrap path "%s" is not a file or does not exist.',
                        $file
                    )
                );
            }

            /** @noinspection PhpIncludeInspection */
            include $file;
        }
    }