# RealtimeClientEventSessionUpdate
## Properties
**event_id** | Option<**String**> | Optional client-generated ID used to identify this event. This is an arbitrary string that a client may assign. It will be passed back if there is an error with the event, but the corresponding `session.updated` event will not include it. | [optional]
**r#type** | **String** | The event type, must be `session.update`. |
**session** | [**models::RealtimeClientEventSessionUpdateSession**](RealtimeClientEventSessionUpdate_session.md) | |
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