/**
* Adds an instant message listener to this chat transport.
*
* @param l The message listener to add.
*/
public void addInstantMessageListener(MessageListener l) {
// If this chat transport does not support instant messaging we do
// nothing here.
if (!allowsInstantMessage()) return;
OperationSetBasicInstantMessaging imOpSet =
contact.getProtocolProvider().getOperationSet(OperationSetBasicInstantMessaging.class);
imOpSet.addMessageListener(l);
}
