kotlin-stdlib/kotlin.coroutines/ExperimentalStdlibCoroutineSupportApi

ExperimentalStdlibCoroutineSupportApi

@RequiresOptIn(level = RequiresOptIn.Level.ERROR)
@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])
annotation class ExperimentalStdlibCoroutineSupportApi(source)

This annotation marks the experimental additions to the standard library API related to coroutines.

Beware using the annotated API especially if you're developing a library, since your library might become binary incompatible with the future versions of the standard library.

Any usage of a declaration annotated with @ExperimentalStdlibCoroutineSupportApi must be accepted either by annotating that usage with the OptIn annotation, e.g. @OptIn(ExperimentalStdlibCoroutineSupportApi::class), or by using the compiler argument -opt-in=kotlin.coroutines.ExperimentalStdlibCoroutineSupportApi.

Since Kotlin

2.4