docs: def tcpPorts(self, req, tag):
          """
          Create and return a L{PortScrollingFragment} for the L{TCPPort} items
          in site store.
          """
          f = PortScrollingFragment(
              self.store,
              TCPPort,
              (TCPPort.portNumber,
               TCPPort.interface,
               FactoryColumn(TCPPort.factory)))
          f.setFragmentParent(self)
          f.docFactory = webtheme.getLoader(f.fragmentName)
          return tag[f]