kotlin-fork/idea/testData/quickfix/experimental/basicFunctionContainingClass.kt

// "Add '@MyExperimentalAPI' annotation to containing class 'Bar'" "true"
// COMPILER_ARGUMENTS: -Xopt-in=kotlin.RequiresOptIn
// WITH_RUNTIME

@RequiresOptIn
annotation class MyExperimentalAPI

@MyExperimentalAPI
fun foo() {}

class Bar {
    fun bar() {
        foo<caret>()
    }
}