# TuplePackAttachmentContent ``` @MainActor @frozen @preconcurrency struct TuplePackAttachmentContent where repeat each T : AttachmentContent ``` ## Relationships ### Conforms To [`Sendable`](/documentation/Swift/Sendable) [`SendableMetatype`](/documentation/Swift/SendableMetatype) [`AttachmentContent`](/documentation/RealityKit/AttachmentContent) --- 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)