private static boolean verifyStatus(Notification<ByteBuf> notif) {
        if (notif.isOnError()) {
            System.out.println("ERROR");
            return false;
        }
        System.out.println("DONE");
        return true;
    }
Base class for the transport/template and proxy examples. It orchestrates application flow, and
handles result(s) from the server. The request execution is implemented in the derived classes, in a way
specific for each API abstration. This separation of concerns makes it is easy to compare complexity of different APIs.

@author Tomasz Bak
ribbon-examples/src/main/java/com/netflix/ribbon/examples/rx/AbstractRxMovieClient.java