[android-components](../../../index.md) / [mozilla.components.browser.session](../../index.md) / [Session](../index.md) / [Observer](index.md) / [onCustomTabConfigChanged](./on-custom-tab-config-changed.md)

# onCustomTabConfigChanged

`open fun onCustomTabConfigChanged(session: `[`Session`](../index.md)`, customTabConfig: `[`CustomTabConfig`](../../../mozilla.components.browser.session.tab/-custom-tab-config/index.md)`?): `[`Unit`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) [(source)](https://github.com/mozilla-mobile/android-components/blob/master/components/browser/session/src/main/java/mozilla/components/browser/session/Session.kt#L56)