protected function getMultisite()
    {
        $sites = [];
        $multiSiteFile = sprintf(
            '%s/sites/sites.php',
            $this->appRoot
        );

        if (file_exists($multiSiteFile)) {
            include $multiSiteFile;
        }

        if (!$sites) {
            $this->getIo()->error(
                $this->trans('commands.debug.multisite.messages.no-multisites')
            );

            return 1;
        }

        return $sites;
    }