[android-components](../../index.md) / [mozilla.components.browser.state.state](../index.md) / [CustomTabSessionState](index.md) / [contextId](./context-id.md)

# contextId

`val contextId: `[`String`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html)`?` [(source)](https://github.com/mozilla-mobile/android-components/blob/master/components/browser/state/src/main/java/mozilla/components/browser/state/state/CustomTabSessionState.kt#L27)

Overrides [SessionState.contextId](../-session-state/context-id.md)

the session context ID of this custom tab.

### Property

`contextId` - the session context ID of this custom tab.