kotlin-stdlib/kotlin/OptIn

OptIn

@Target(allowedTargets = [AnnotationTarget.CLASS, AnnotationTarget.PROPERTY, AnnotationTarget.LOCAL_VARIABLE, AnnotationTarget.VALUE_PARAMETER, AnnotationTarget.CONSTRUCTOR, AnnotationTarget.FUNCTION, AnnotationTarget.PROPERTY_GETTER, AnnotationTarget.PROPERTY_SETTER, AnnotationTarget.EXPRESSION, AnnotationTarget.FILE, AnnotationTarget.TYPEALIAS])
annotation class OptIn(val markerClass: KClass<out Annotation>)(source)

Allows to use the API denoted by the given markers in the annotated file, declaration, or expression. If a declaration is annotated with OptIn, its usages are not required to opt in to that API.

Since Kotlin

1.3

Properties

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val markerClass: Array<out KClass<out Annotation>>
Since Kotlin 1.3