docs: def addServer(self, normalPort, sslPort, f, name):
          """
          Add a TCP and an SSL server. Name them `name` and `name`+'s'.
  
          @param normalPort:
          @param sslPort:
          @param f:
          @param name:
          """
          tcp = internet.TCPServer(normalPort, f)
          tcp.setName(name)
          self.servers.append(tcp)
          if sslPort is not None:
              ssl = internet.SSLServer(sslPort, f, contextFactory=self.sslfac)
              ssl.setName(name+'s')
              self.servers.append(ssl)