<init>

Common
JVM
JS
Native
1.0
OptIn(vararg markerClass: KClass<out Annotation>)

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.

This class requires opt-in itself and can only be used with the compiler argument -opt-in=kotlin.RequiresOptIn.