Request and Prequest

public class Request {

  // Nonblocking communication

  public Status wait() {...}

  public Status test() {...}

  public Request() {...}

  public void finalize() {...}

  public boolean isVoid() {...}

  public static Status waitAny(Request [] arrayOfRequests) {...}

  public static Status testAny(Request [] arrayOfRequests) {...}

  public static Status [] waitAll(Request [] arrayOfRequests) {...}

  public static Status [] testAll(Request [] arrayOfRequests) {...}

  public static Status [] waitSome(Request [] arrayOfRequests) {...}

  public static Status [] testSome(Request [] arrayOfRequests) {...}


  // Probe and cancel

  public void cancel() {...}

  ...
}

public class Prequest extends Request {

  // Persistent communication requests

  public void start() {...}

  public static void startAll(Request [] arrayOfRequests) {...}

  ...
}