protected function getPriorityBefore(string $fixerClass): int
    {
        if (! is_a($fixerClass, FixerInterface::class, true)) {
            return 0;
        }

        /** @var FixerInterface $fixer */
        $fixer = (new ReflectionClass($fixerClass))->newInstanceWithoutConstructor();

        return $fixer->getPriority() + 5;
    }