/**
* Retrieves a pseudo roster based off of a registration.
*
* @param jid To retrieve the roster for.
* @param type TransportType the roster is for.
* @return A Pseudo roster
* @throws UserNotFoundException if the user is not actually registered.
*/
public PseudoRoster getPseudoRoster(JID jid, TransportType type) throws UserNotFoundException {
Collection<Registration> registrations =
RegistrationManager.getInstance().getRegistrations(jid, type);
if (registrations.isEmpty()) {
// User is not registered with us.
throw new UserNotFoundException("Unable to find registration.");
}
Registration registration = registrations.iterator().next();
return getPseudoRoster(registration);
}