Optional example

        $constraints = [
            new Collection([
                'allowExtraFields' => true,
                'allowMissingFields' => false,
                'fields' => [
                    'currencyId' => [new NotBlank(), new Uuid()],
                    'gross' => [new NotBlank(), new Type(['numeric'])],
                    'net' => [new NotBlank(), new Type(['numeric'])],
                    'linked' => [new Type('boolean')],
                    'listPrice' => [
                        new Optional(
                            new Collection([
                                'allowExtraFields' => true,
                                'allowMissingFields' => false,
                                'fields' => [
                                    'gross' => [new NotBlank(), new Type(['numeric'])],
                                    'net' => [new NotBlank(), new Type('numeric')],
                                    'linked' => [new Type('boolean')],
                                ],
                            ])
                        ),
                    ],
                    

protected function getConstraints(Field $field): array
    {
        return [
            new Collection([
                'allowExtraFields' => true,
                'allowMissingFields' => true,
                'fields' => [
                    'displayParent' => [new Type('boolean')],
                    'mainVariantId' => [new Uuid()],
                    'configuratorGroupConfig' => [
                        new Optional(
                            new Collection([
                                'allowExtraFields' => true,
                                'allowMissingFields' => true,
                                'fields' => [
                                    'id' => [new NotBlank(), new Uuid()],
                                    'representation' => [new NotBlank(), new Type('string')],
                                    'expressionForListings' => [new NotBlank(), new Type('boolean')],
                                ],
                            ])
                        ),
                    ],
                ],

protected function getConstraints(Field $field): array
    {
        return [
            new Collection([
                'allowExtraFields' => true,
                'allowMissingFields' => false,
                'fields' => [
                    'eventName' => [new NotBlank(), new Type('string')],
                    'description' => [new Type('string')],
                    'sequences' => [
                        [
                            new Optional(
                                new Collection([
                                    'allowExtraFields' => true,
                                    'allowMissingFields' => false,
                                    'fields' => [
                                        'id' => [new NotBlank(), new Uuid()],
                                        'actionName' => [new NotBlank(), new Type('string')],
                                        'parentId' => [new Uuid()],
                                        'ruleId' => [new Uuid()],
                                        'position' => [new Type('numeric')],
                                        'trueCase' => [new Type('boolean')],
                                        'displayGroup' => [new Type('numeric')],