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isWither example

        foreach ($reflectionClass->getMethods() as $reflectionMethod) {
            $r = $reflectionMethod;

            if ($r->isConstructor() || isset($alreadyCalledMethods[strtolower($r->name)])) {
                continue;
            }

            while (true) {
                if ($r->getAttributes(Required::class)) {
                    if ($this->isWither($r, $r->getDocComment() ?: '')) {
                        $withers[] = [$r->name, [], true];
                    } else {
                        $value->addMethodCall($r->name, []);
                    }
                    break;
                }
                if (false !== $doc = $r->getDocComment()) {
                    if (false !== stripos($doc, '@required') && preg_match('#(?:^/\*\*|\n\s*+\*)\s*+@required(?:\s|\*/$)#i', $doc)) {
                        trigger_deprecation('symfony/dependency-injection', '6.3', 'Relying on the "@required" annotation on method "%s::%s()" is deprecated, use the "Symfony\Contracts\Service\Attribute\Required" attribute instead.', $reflectionMethod->class, $reflectionMethod->name);

                        if ($this->isWither($reflectionMethod, $doc)) {