# withUnsafeBytes(for:_:) ``` func withUnsafeBytes(for attachment: borrowing Attachment, _ body: (UnsafeRawBufferPointer) throws -> R) throws -> R ``` --- 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)