The reference to a registered handler.
public interface IRegisteredHandler
Such a handler reference is provided whenever a handler with a server side presence is registered.
Added in version 5.0.
Requests that the handler is unregistered from the server.
After the handler is unregistered, the handler's
method will be called. If the handler has already been unregistered, calling this method has no effect.
If the returned
Task completes successfully, the result
Added in version 6.1
The session is closed. Thrown by the returned