'Add an endpoint to a service.
@type service: L{bytes}
@param service: A service, either C{b\'smtp\'} or C{b\'pop3\'}.
@type description: L{bytes}
@param description: An endpoint description string or a TCP port
number.'

def addEndpoint(self, service, description):

    from twisted.internet import reactor
    self[service].append(endpoints.serverFromString(reactor, description))
