Function
updated
Send a notifications/*/updated notification to the client
For resources and prompts that support subscriptions, this notification pushes updates to clients that have subscribed. The update includes the new content so clients don't need to re-fetch.
Only clients that explicitly subscribed to these resources/prompts will receive the updates.
https://spec.modelcontextprotocol.io/specification/server/resources/updated
updated: func(output: borrow<output-stream>, updates: server-subscriptions) -> result<_, notification-error>;