/**
* Add a file transfer listener to listen to incoming file transfer requests.
*
* @param li The listener
* @see #removeFileTransferListener(FileTransferListener)
* @see FileTransferListener
*/
public void addFileTransferListener(final FileTransferListener li) {
if (listeners == null) {
initListeners();
}
synchronized (this.listeners) {
listeners.add(li);
}
}
