# RequestExtrasKey

Artifact: [androidx.navigation3:navigation3-runtime](https://developer.android.com/jetpack/androidx/releases/navigation3) [View Source](https://cs.android.com/search?q=file:androidx/navigation3/runtime/deeplink/RequestExtras.kt+class:androidx.navigation3.runtime.deeplink.RequestExtrasKey) Added in [1.2.0](https://developer.android.com/jetpack/androidx/releases/navigation3#1.2.0) Common/AllAndroid/JVM
- Cmn

  ```
  interface RequestExtrasKey<T : Any>
  ```
Known direct subclasses [DeepLinkRequest.Companion.MimeTypeExtrasKey](https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/DeepLinkRequest.Companion.MimeTypeExtrasKey)

|---|---|
| `https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/DeepLinkRequest.Companion.MimeTypeExtrasKey` | The `https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/RequestExtrasKey` for the mimeType stored inside the `https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/RequestExtras` returned by `https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/DeepLinkRequest#mimeTypeExtra(kotlin.String)`. |

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The base Key associated with a value of type `https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/RequestExtrasKey`.

`https://developer.android.com/reference/kotlin/androidx/navigation3/runtime/deeplink/RequestExtras` keys must implement this interface.