code: def postOptions(self):
          
          store = self.parent.parent.getStore()
          port = None
          factories = {}
          for portType in [TCPPort, SSLPort, StringEndpointPort]:
              for port in store.query(portType):
                  key = port.factory.storeID
                  if key not in factories:
                      factories[key] = (port.factory, [])
                  factories[key][1].append(port)
          for factory in store.powerupsFor(IProtocolFactoryFactory):
              key = factory.storeID
              if key not in factories:
                  factories[key] = (factory, [])
          def key((factory, ports)):
              return factory.storeID
          for factory, ports in sorted(factories.values(), key=key):
              if ports:
                  print '%d) %r listening on:' % (factory.storeID, factory)
                  for port in ports:
                      if getattr(port, 'interface', None):
                          interface = "interface " + port.interface
                      else:
                          interface = "any interface"
                      if isinstance(port, TCPPort):
                          print '  %d) TCP, %s, port %d' % (
                              port.storeID, interface, port.portNumber)
                      elif isinstance(port, SSLPort):
                          if port.certificatePath is not None:
                              pathPart = 'certificate %s' % (
                                  port.certificatePath.path,)
                          else:
                              pathPart = 'NO CERTIFICATE'
                          if port.portNumber is not None:
                              portPart = 'port %d' % (port.portNumber,)
                          else:
                              portPart = 'NO PORT'
                          print '  %d) SSL, %s, %s, %s' % (
                              port.storeID, interface, portPart, pathPart)
                      elif isinstance(port, StringEndpointPort):
                          print '  {:d}) Endpoint {!r}'.format(
                              port.storeID, port.description)
              else:
                  print '%d) %r is not listening.' % (factory.storeID, factory)
          if not factories:
              print "There are no ports configured."
          raise SystemExit(0)
docs: Display details about the ports which already exist.