public static function getApplicableRules()
    {
        $rules = [
            FixerInterface::PSR2_LEVEL    => static::getPsr2Rules(),
            FixerInterface::SYMFONY_LEVEL => static::getSymfonyRules(),
            FixerInterface::CONTRIB_LEVEL => static::getContribRules(),
        ];

        return static::_prepareRules($rules);
    }