A helper that calls several handlers in sequence and returns the first acceptable response.
By default, a response is considered acceptable if it has a status other than 404 or 405; other statuses indicate that the handler understood the request.
If all handlers return unacceptable responses, the final response will be returned.
var handler = new Cascade() .add(webSocketHandler) .add(staticFileHandler) .add(application) .handler;
dynamic other) → bool
The equality operator.