CanAwait

@implicitNotFound("Don\'t call `Awaitable` methods directly, use the `Await` object.") sealed trait CanAwait

This marker trait is used by Await to ensure that Awaitable.ready and Awaitable.result are not directly called by user code. An implicit instance of this trait is only available when user code is currently calling the methods on Await.

class Object
trait Matchable
class Any