HttpServer and Startable should not have default for methods that take callbacks / notify

[RichardHightower]

public interface HttpServer extends Server, HttpTransport {

    default HttpServer startServer() {
        start();
        return this;
    }


    default HttpServer startServerAndWait() {
        throw new UnsupportedOperationException("startServerAndWait is not supported by " + this.getClass().getName());
    }

[RichardHightower]

public interface Startable {

    default void start() {
    }

    default void startWithNotify(Runnable runnable) {
        throw new UnsupportedOperationException("start With Notice if not supported by " + this.getClass().getName());
    }
}