N98\Magento\Application::setRootDir PHP Method

    private function setRootDir($path)
    {
        if (isset($path[0]) && '~' === $path[0]) {
            $path = OperatingSystem::getHomeDir() . substr($path, 1);
        }
        $folder = realpath($path);
        $this->_directRootDir = true;
        if (is_dir($folder)) {
            chdir($folder);
        }
    }