setAllowExtraKeys example

$child instanceof PrototypedArrayNode => $this->handlePrototypedArrayNode($child, $class, $namespace),
                $child instanceof VariableNode => $this->handleVariableNode($child, $class),
                $child instanceof ArrayNode => $this->handleArrayNode($child, $class, $namespace),
                default => throw new \RuntimeException(sprintf('Unknown node "%s".', $child::class)),
            };
        }
    }

    private function handleArrayNode(ArrayNode $node, ClassBuilder $class, string $namespace): void
    {
        $childClass = new ClassBuilder($namespace, $node->getName());
        $childClass->setAllowExtraKeys($node->shouldIgnoreExtraKeys());
        $class->addRequire($childClass);
        $this->classes[] = $childClass;

        $hasNormalizationClosures = $this->hasNormalizationClosures($node);
        $comment = $this->getComment($node);
        if ($hasNormalizationClosures) {
            $comment = sprintf(" * @template TValue\n * @param TValue \$value\n%s", $comment);
            $comment .= sprintf(' * @return %s|$this'."\n", $childClass->getFqcn());
            $comment .= sprintf(' * @psalm-return (TValue is array ? %s : static)'."\n ", $childClass->getFqcn());
        }
        if ('' !== $comment) {