# init(id:_:) Creates a collection that contains the tool calls you provide. ``` init(id: String = UUID().uuidString, _ calls: S) where S : Sequence, S.Element == Transcript.ToolCall ``` ## Parameters `id` A unique identifier for the collection of tool calls. `calls` The tool calls to include, in the order the model generates them. --- 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)