CustomFields example

new VersionField())->addFlags(new ApiAware()),
            (new FkField('capture_id', 'captureId', OrderTransactionCaptureDefinition::class))->addFlags(new ApiAware(), new Required()),
            (new ReferenceVersionField(OrderTransactionCaptureDefinition::class, 'capture_version_id'))->addFlags(new ApiAware(), new Required()),
            (new StateMachineStateField('state_id', 'stateId', OrderTransactionCaptureRefundStates::STATE_MACHINE))->addFlags(new ApiAware(), new Required()),
            (new ManyToOneAssociationField('stateMachineState', 'state_id', StateMachineStateDefinition::class, 'id', $autoload))->addFlags(new ApiAware()),
            (new ManyToOneAssociationField('transactionCapture', 'capture_id', OrderTransactionCaptureDefinition::class, 'id'))->addFlags(new ApiAware()),
            (new OneToManyAssociationField('positions', OrderTransactionCaptureRefundPositionDefinition::class, 'refund_id'))->addFlags(new ApiAware(), new CascadeDelete()),

            (new StringField('external_reference', 'externalReference'))->addFlags(new ApiAware()),
            (new StringField('reason', 'reason'))->addFlags(new ApiAware()),
            (new CalculatedPriceField('amount', 'amount'))->addFlags(new ApiAware(), new Required()),
            (new CustomFields())->addFlags(new ApiAware()),
        ]);
    }
}

    protected function getParentDefinitionClass(): string
    {
        return CmsSlotDefinition::class;
    }

    protected function defineFields(): FieldCollection
    {
        return new FieldCollection([
            (new SlotConfigField('config', 'config'))->addFlags(new ApiAware()),
            (new CustomFields())->addFlags(new ApiAware()),
        ]);
    }
}

new FkField('order_id', 'orderId', OrderDefinition::class))->addFlags(new Required()),
            (new ReferenceVersionField(OrderDefinition::class))->addFlags(new Required()),

            (new StringField('email', 'email'))->addFlags(new ApiAware(), new Required(), new SearchRanking(SearchRanking::HIGH_SEARCH_RANKING)),
            (new FkField('salutation_id', 'salutationId', SalutationDefinition::class))->addFlags(new ApiAware()),
            (new StringField('first_name', 'firstName'))->addFlags(new ApiAware(), new Required(), new SearchRanking(SearchRanking::LOW_SEARCH_RANKING)),
            (new StringField('last_name', 'lastName'))->addFlags(new ApiAware(), new Required(), new SearchRanking(SearchRanking::HIGH_SEARCH_RANKING)),
            (new StringField('company', 'company'))->addFlags(new ApiAware(), new SearchRanking(SearchRanking::MIDDLE_SEARCH_RANKING)),
            (new StringField('title', 'title'))->addFlags(new ApiAware()),
            (new ListField('vat_ids', 'vatIds', StringField::class))->addFlags(new ApiAware()),
            (new StringField('customer_number', 'customerNumber'))->addFlags(new ApiAware(), new SearchRanking(SearchRanking::HIGH_SEARCH_RANKING)),
            (new CustomFields())->addFlags(new ApiAware()),
            new OneToOneAssociationField('order', 'order_id', 'id', OrderDefinition::class, false),
            (new ManyToOneAssociationField('customer', 'customer_id', CustomerDefinition::class, 'id', false))->addFlags(new SearchRanking(0.5)),
            (new ManyToOneAssociationField('salutation', 'salutation_id', SalutationDefinition::class, 'id', false))->addFlags(new ApiAware()),
            new RemoteAddressField('remote_address', 'remoteAddress'),
        ]);
    }
}

    protected function getParentDefinitionClass(): string
    {
        return TaxProviderDefinition::class;
    }

    protected function defineFields(): FieldCollection
    {
        return new FieldCollection([
            (new StringField('name', 'name'))->addFlags(new Required()),
            (new CustomFields())->addFlags(new ApiAware()),
        ]);
    }
}

        return '6.0.0.0';
    }

    protected function defineFields(): FieldCollection
    {
        return new FieldCollection([
            (new IdField('id', 'id'))->addFlags(new PrimaryKey(), new Required()),
            (new StringField('name', 'name'))->addFlags(new ApiAware(), new Required()),
            (new StringField('base_file', 'baseFile'))->addFlags(new Required()),
            (new StringField('iso', 'iso'))->addFlags(new ApiAware(), new Required()),
            (new CustomFields())->addFlags(new ApiAware()),
            (new OneToManyAssociationField('snippets', SnippetDefinition::class, 'snippet_set_id'))->addFlags(new ApiAware(), new CascadeDelete()),
            (new OneToManyAssociationField('salesChannelDomains', SalesChannelDomainDefinition::class, 'snippet_set_id'))->addFlags(new RestrictDelete()),
        ]);
    }
}

new VersionField())->addFlags(new ApiAware()),

            (new FkField('order_line_item_id', 'orderLineItemId', OrderLineItemDefinition::class))->addFlags(new ApiAware(), new Required()),
            (new ReferenceVersionField(OrderLineItemDefinition::class))->addFlags(new ApiAware(), new Required()),

            (new FkField('media_id', 'mediaId', MediaDefinition::class))->addFlags(new ApiAware(), new Required()),
            (new IntField('position', 'position'))->addFlags(new ApiAware(), new Required()),
            (new BoolField('access_granted', 'accessGranted'))->addFlags(new ApiAware(), new Required()),

            (new ManyToOneAssociationField('orderLineItem', 'order_line_item_id', OrderLineItemDefinition::class, 'id'))->addFlags(new ApiAware()),
            (new ManyToOneAssociationField('media', 'media_id', MediaDefinition::class, 'id'))->addFlags(new ApiAware()),
            (new CustomFields())->addFlags(new ApiAware()),
        ]);
    }
}

        return new FieldCollection([
            (new IdField('id', 'id'))->addFlags(new PrimaryKey(), new Required()),
            new BoolField('create_thumbnails', 'createThumbnails'),
            new BoolField('keep_aspect_ratio', 'keepAspectRatio'),
            new IntField('thumbnail_quality', 'thumbnailQuality', 0, 100),
            new BoolField('private', 'private'),
            new BoolField('no_association', 'noAssociation'),
            new OneToManyAssociationField('mediaFolders', MediaFolderDefinition::class, 'media_folder_configuration_id', 'id'),
            new ManyToManyAssociationField('mediaThumbnailSizes', MediaThumbnailSizeDefinition::class, MediaFolderConfigurationMediaThumbnailSizeDefinition::class, 'media_folder_configuration_id', 'media_thumbnail_size_id'),
            (new BlobField('media_thumbnail_sizes_ro', 'mediaThumbnailSizesRo'))->removeFlag(ApiAware::class)->addFlags(new Computed()),
            new CustomFields(),
        ]);
    }
}

new BoolField('stackable', 'stackable'))->addFlags(new ApiAware()),
            (new IntField('position', 'position'))->addFlags(new ApiAware(), new Required()),
            (new ListField('states', 'states', StringField::class))->addFlags(new ApiAware(), new Required()),

            (new CalculatedPriceField('price', 'price'))->addFlags(new Required()),
            (new PriceDefinitionField('price_definition', 'priceDefinition'))->addFlags(new ApiAware()),

            (new FloatField('unit_price', 'unitPrice'))->addFlags(new ApiAware(), new Computed()),
            (new FloatField('total_price', 'totalPrice'))->addFlags(new ApiAware(), new Computed()),
            (new LongTextField('description', 'description'))->addFlags(new ApiAware()),
            (new StringField('type', 'type'))->addFlags(new ApiAware()),
            (new CustomFields())->addFlags(new ApiAware()),
            new ManyToOneAssociationField('order', 'order_id', OrderDefinition::class, 'id', false),
            new ManyToOneAssociationField('product', 'product_id', ProductDefinition::class, 'id', false),
            new ManyToOneAssociationField('promotion', 'promotion_id', PromotionDefinition::class, 'id', false),
            (new OneToManyAssociationField('orderDeliveryPositions', OrderDeliveryPositionDefinition::class, 'order_line_item_id', 'id'))->addFlags(new ApiAware(), new CascadeDelete(), new WriteProtected()),
            (new OneToManyAssociationField('orderTransactionCaptureRefundPositions', OrderTransactionCaptureRefundPositionDefinition::class, 'order_line_item_id'))->addFlags(new CascadeDelete()),
            (new OneToManyAssociationField('downloads', OrderLineItemDownloadDefinition::class, 'order_line_item_id'))->addFlags(new ApiAware(), new CascadeDelete()),
            (new ParentAssociationField(self::class))->addFlags(new ApiAware()),
            (new ChildrenAssociationField(self::class))->addFlags(new ApiAware(), new Required()),
        ]);
    }
}

    protected function getParentDefinitionClass(): string
    {
        return CmsPageDefinition::class;
    }

    protected function defineFields(): FieldCollection
    {
        return new FieldCollection([
            new StringField('name', 'name'),
            (new CustomFields())->addFlags(new ApiAware()),
        ]);
    }
}

protected function getParentDefinitionClass(): string
    {
        return CountryDefinition::class;
    }

    protected function defineFields(): FieldCollection
    {
        return new FieldCollection([
            (new StringField('name', 'name'))->addFlags(new ApiAware(), new Required()),
            (new JsonField('address_format', 'addressFormat'))->addFlags(new ApiAware(), new Required()),
            (new CustomFields())->addFlags(new ApiAware()),
        ]);
    }
}

protected function getParentDefinitionClass(): string
    {
        return ThemeDefinition::class;
    }

    protected function defineFields(): FieldCollection
    {
        return new FieldCollection([
            (new StringField('description', 'description'))->addFlags(new ApiAware()),
            (new JsonField('labels', 'labels'))->addFlags(new ApiAware()),
            (new JsonField('help_texts', 'helpTexts'))->addFlags(new ApiAware()),
            (new CustomFields())->addFlags(new ApiAware()),
        ]);
    }
}

protected function getParentDefinitionClass(): string
    {
        return PaymentMethodDefinition::class;
    }

    protected function defineFields(): FieldCollection
    {
        return new FieldCollection([
            (new StringField('name', 'name'))->addFlags(new ApiAware(), new Required()),
            (new StringField('distinguishable_name', 'distinguishableName'))->addFlags(new ApiAware(), new WriteProtected(Context::SYSTEM_SCOPE)),
            (new LongTextField('description', 'description'))->addFlags(new ApiAware()),
            (new CustomFields())->addFlags(new ApiAware()),
        ]);
    }
}

new ReferenceVersionField(OrderAddressDefinition::class, 'shipping_order_address_version_id'))->addFlags(new ApiAware(), new Required()),

            (new FkField('shipping_method_id', 'shippingMethodId', ShippingMethodDefinition::class))->addFlags(new ApiAware(), new Required()),

            (new StateMachineStateField('state_id', 'stateId', OrderDeliveryStates::STATE_MACHINE))->addFlags(new ApiAware(), new Required()),
            (new ManyToOneAssociationField('stateMachineState', 'state_id', StateMachineStateDefinition::class, 'id', $autoload))->addFlags(new ApiAware()),

            (new ListField('tracking_codes', 'trackingCodes', StringField::class))->addFlags(new ApiAware(), new Required(), new SearchRanking(SearchRanking::HIGH_SEARCH_RANKING)),
            (new DateTimeField('shipping_date_earliest', 'shippingDateEarliest'))->addFlags(new ApiAware(), new Required(), new SearchRanking(SearchRanking::MIDDLE_SEARCH_RANKING)),
            (new DateTimeField('shipping_date_latest', 'shippingDateLatest'))->addFlags(new ApiAware(), new Required(), new SearchRanking(SearchRanking::MIDDLE_SEARCH_RANKING)),
            (new CalculatedPriceField('shipping_costs', 'shippingCosts'))->addFlags(new ApiAware()),
            (new CustomFields())->addFlags(new ApiAware()),
            new ManyToOneAssociationField('order', 'order_id', OrderDefinition::class, 'id', false),
            (new ManyToOneAssociationField('shippingOrderAddress', 'shipping_order_address_id', OrderAddressDefinition::class, 'id', $autoload))->addFlags(new ApiAware(), new SearchRanking(SearchRanking::ASSOCIATION_SEARCH_RANKING)),
            (new ManyToOneAssociationField('shippingMethod', 'shipping_method_id', ShippingMethodDefinition::class, 'id'))->addFlags(new ApiAware(), new SearchRanking(SearchRanking::ASSOCIATION_SEARCH_RANKING)),
            (new OneToManyAssociationField('positions', OrderDeliveryPositionDefinition::class, 'order_delivery_id', 'id'))->addFlags(new ApiAware(), new CascadeDelete(), new SearchRanking(SearchRanking::ASSOCIATION_SEARCH_RANKING)),
        ]);
    }
}

    protected function defineFields(): FieldCollection
    {
        $collection = new FieldCollection([
            (new IdField('id', 'id'))->addFlags(new PrimaryKey(), new Required()),
            (new StringField('label', 'label'))->addFlags(new Required()),
            (new StringField('access_key', 'accessKey'))->addFlags(new Required()),
            (new PasswordField('secret_access_key', 'secretAccessKey'))->addFlags(new Required()),
            new DateTimeField('last_usage_at', 'lastUsageAt'),
            new BoolField('admin', 'admin'),
            new CustomFields(),
            new DateTimeField('deleted_at', 'deletedAt'),

            (new OneToOneAssociationField('app', 'id', 'integration_id', AppDefinition::class, false))->addFlags(new RestrictDelete()),
            new ManyToManyAssociationField('aclRoles', AclRoleDefinition::class, IntegrationRoleDefinition::class, 'integration_id', 'acl_role_id'),
        ]);

        if (!Feature::isActive('v6.6.0.0')) {
            $collection->add((new BoolField('write_access', 'writeAccess'))->addFlags(new Deprecated('v6.5.0.0', 'v6.6.0.0')));
        }

        return $collection;
    }

return SnippetSetDefinition::class;
    }

    protected function defineFields(): FieldCollection
    {
        return new FieldCollection([
            (new IdField('id', 'id'))->addFlags(new PrimaryKey(), new Required()),
            (new FkField('snippet_set_id', 'setId', SnippetSetDefinition::class))->addFlags(new ApiAware(), new Required()),
            (new StringField('translation_key', 'translationKey'))->addFlags(new ApiAware(), new Required(), new SearchRanking(SearchRanking::HIGH_SEARCH_RANKING)),
            (new LongTextField('value', 'value'))->addFlags(new ApiAware(), new Required(), new SearchRanking(SearchRanking::HIGH_SEARCH_RANKING), new AllowHtml(), new AllowEmptyString()),
            (new StringField('author', 'author'))->addFlags(new Required(), new SearchRanking(SearchRanking::HIGH_SEARCH_RANKING)),
            (new CustomFields())->addFlags(new ApiAware()),
            new ManyToOneAssociationField('set', 'snippet_set_id', SnippetSetDefinition::class, 'id', false),
        ]);
    }
}