# append(contentsOf:) Adds the specified list of entity as children to this entity. ``` @MainActor @preconcurrency func append(contentsOf sequence: S) where S : Sequence, S.Element : Entity ``` ## Parameters `sequence` The child entities to add to the collection. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)