# AnyAttachmentContent A type-erased attachment content. ``` @MainActor @frozen @preconcurrency struct AnyAttachmentContent ``` ## Overview An `AnyAttachmentContent` allows changing the type of attachment used in a given attachment content. Whenever the type of attachment content used with an `AnyAttachmentContent` changes, the old content is destroyed and the new content is created for the new type. ## Topics ### Initializers [`init(Content)`](/documentation/RealityKit/AnyAttachmentContent/init(_:)) Creates an instance that type-erases [`AttachmentContent`](/documentation/RealityKit/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)