isStorefrontController example

if ($this->isInternal($doc)) {
            return [];
        }

        $class = $node->getClassReflection()->getName();

        if ($this->isTestClass($node)) {
            return [\sprintf('Test classes (%s) must be flagged @internal to not be captured by the BC checker', $node->getClassReflection()->getName())];
        }

        if ($this->isStorefrontController($node)) {
            return ['Storefront controllers must be flagged @internal to not be captured by the BC checker. The BC promise is checked over the route annotation.'];
        }

        if ($this->isBundle($node)) {
            return ['Bundles must be flagged @internal to not be captured by the BC checker.'];
        }

        if ($this->isEventSubscriber($node) && !$this->isFinal($node->getClassReflection(), $doc) && !\in_array($class, self::SUBSCRIBER_EXCEPTIONS, true)) {
            return ['Event subscribers must be flagged @internal or @final to not be captured by the BC checker.'];
        }