# ExperimentalNavigationEventApi

Artifact: [androidx.navigationevent:navigationevent](https://developer.android.com/jetpack/androidx/releases/navigationevent) [View Source](https://cs.android.com/search?q=file:androidx/navigationevent/Annotations.kt+class:androidx.navigationevent.ExperimentalNavigationEventApi) Added in [1.2.0](https://developer.android.com/jetpack/androidx/releases/navigationevent#1.2.0)

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```
@MustBeDocumented
@Retention(value = AnnotationRetention.BINARY)
@Target(allowedTargets = [AnnotationTarget.CLASS, AnnotationTarget.ANNOTATION_CLASS, AnnotationTarget.PROPERTY, AnnotationTarget.FIELD, AnnotationTarget.LOCAL_VARIABLE, AnnotationTarget.VALUE_PARAMETER, AnnotationTarget.CONSTRUCTOR, AnnotationTarget.FUNCTION, AnnotationTarget.PROPERTY_GETTER, AnnotationTarget.PROPERTY_SETTER, AnnotationTarget.TYPEALIAS])
@RequiresOptIn(level = RequiresOptIn.Level.WARNING)
public annotation ExperimentalNavigationEventApi
```

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Marks declarations that are still **experimental** in the NavigationEvent API, which means that the design of the corresponding declarations has open issues which may (or may not) lead to changes in the future. There is a chance that these declarations will be deprecated in the near future, or their behavior and semantics may change in a way that breaks existing code.