def post(method, hmc, uri, uri_parms, body, logon_required,
             wait_for_completion):
        """Operation: Add Candidate Adapter Ports to an FCP Storage Group."""
        assert wait_for_completion is True  # async not supported yet
        # The URI is a POST operation, so we need to construct the SG URI
        storage_group_oid = uri_parms[0]
        storage_group_uri = '/api/storage-groups/' + storage_group_oid
        try:
            storage_group = hmc.lookup_by_uri(storage_group_uri)
        except KeyError:
            raise InvalidResourceError(method, uri)

        check_required_fields(method, uri, body, ['adapter-port-uris'])

        # TODO: Check that storage group has type FCP

        # Reflect the result of adding the candidate ports
        candidate_adapter_port_uris = \
            storage_group.properties['candidate-adapter-port-uris']
        for ap_uri in body['adapter-port-uris']:
            if ap_uri in candidate_adapter_port_uris:
                raise ConflictError(method, uri, 483,
                                    "Adapter port is already in candidate "
                                    "list of storage group %s: %s" %
                                    (storage_group.name, ap_uri))
            else:
                candidate_adapter_port_uris.append(ap_uri)