i am trying to opt-in for

@ExperimentalTime

in my multi-platform module - but the following doesnt work :

sourceSets {
    all {
        languageSettings.optIn("kotlin.time.ExperimentalTime")
    }
}

languageSettings

cant be found

languageSettings.optIn("kotlin.time.ExperimentalTime")
                   ^ Unresolved reference: languageSettings

anyine know what am i missing? this seems to be exactly as per the documentation page https://kotlinlang.org/docs/opt-in-requirements.html#module-wide-opt-in i'm updating to

1.6.10

this is working for me