Notifications property needs to accept reference to IBeepTransportNotifications object. This object is capable of receiving your notifications such as:

Connected - when you successfully connect to remote peer,
Disconnected - when you got disconnected from remote peer,
MessageReceived - when you have received the message and want to provide it to wodBeep
etc..

Using notifications is easy from your code - once you want to "fire" notification, you just need to do something like

Notifications.MessageReceived (NewMessage)

and it will be caught by whoever owns the notification.