[android-components](../../../index.md) / [mozilla.components.browser.state.action](../../index.md) / [WebExtensionAction](../index.md) / [UpdatePageAction](index.md) / [extensionId](./extension-id.md)

# extensionId

`val extensionId: `[`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/action/BrowserAction.kt#L325)