PopupParams
fun PopupParams(message: String, title: String?, buttons: Array<PopupButton>): <Error class: unknown class>
fun PopupParams(message: String, firstButton: PopupButton, vararg otherButtons: PopupButton): <Error class: unknown class>
fun PopupParams(title: String, message: String, firstButton: PopupButton, vararg otherButtons: PopupButton): <Error class: unknown class>