how come i can't use my own interface via SAM conv...

# announcements

[danneu]

how come i can't use my own interface via SAM conversion?

@FunctionalInterface
interface HandlerFn {
    fun handle(request: Request): Response
}

fun main(args: Array<String>) {
    val handler = HandlerFn { request: Request -> Response() }
    // Error: "Interface HandlerFn does not have constructors"
}