/**
* An event was received from the layer below. Usually the current layer will want to examine the
* event type and - depending on its type - perform some computation (e.g. removing headers from a
* MSG event type, or updating the internal membership list when receiving a VIEW_CHANGE event).
* Finally the event is either a) discarded, or b) an event is sent down the stack using <code>
* down_prot.down()</code> or c) the event (or another event) is sent up the stack using <code>
* up_prot.up()</code>.
*/
public Object up(Event evt) {
return up_prot.up(evt);
}
