code: protected void firePeerDiscovered(URI peerURI) {
          final NetworkServiceListener[] ilisteners;
          synchronized (this.listeners) {
              ilisteners = new NetworkServiceListener[this.listeners.size()];
              this.listeners.toArray(ilisteners);
          }
          for (final NetworkServiceListener listener : ilisteners) {
              listener.peerDiscovered(peerURI);
          }
      }
docs: Notifies that a peer was discovered.
  
  @param peerURI
  - the URI of the remote kernel that was disconnected to.