def on_GET(self, origin, content, query):
        if self.deny_access:
            raise FederationDeniedError(origin)

        limit = parse_integer_from_args(query, "limit", 0)
        since_token = parse_string_from_args(query, "since", None)
        include_all_networks = parse_boolean_from_args(
            query, "include_all_networks", False
        )
        third_party_instance_id = parse_string_from_args(
            query, "third_party_instance_id", None
        )

        if include_all_networks:
            network_tuple = None
        elif third_party_instance_id:
            network_tuple = ThirdPartyInstanceID.from_string(third_party_instance_id)
        else:
            network_tuple = ThirdPartyInstanceID(None, None)

        data = yield self.handler.get_local_public_room_list(
            limit, since_token,
            network_tuple=network_tuple,
            from_federation=True,
        )
        defer.returnValue((200, data))

 def on_GET(self, origin, content, query):
     limit = parse_integer_from_args(query, "limit", 0)
     since_token = parse_string_from_args(query, "since", None)
     data = yield self.room_list_handler.get_local_public_room_list(
         limit, since_token
     )
     defer.returnValue((200, data))

    def on_POST(self, origin, content, query, group_id, user_id):
        requester_user_id = parse_string_from_args(query, "requester_user_id")
        if get_domain_from_id(requester_user_id) != origin:
            raise SynapseError(403, "requester_user_id doesn't match origin")

        new_content = yield self.handler.remove_user_from_group(
            group_id, user_id, requester_user_id, content,
        )

        defer.returnValue((200, new_content))

    def on_DELETE(self, origin, content, query, group_id, role_id):
        requester_user_id = parse_string_from_args(query, "requester_user_id")
        if get_domain_from_id(requester_user_id) != origin:
            raise SynapseError(403, "requester_user_id doesn't match origin")

        if role_id == "":
            raise SynapseError(400, "role_id cannot be empty string")

        resp = yield self.handler.delete_group_role(
            group_id, requester_user_id, role_id,
        )

        defer.returnValue((200, resp))

 def on_GET(self, origin, content, query, context):
     return self.handler.on_context_state_request(
         origin,
         context,
         parse_string_from_args(query, "event_id", None),
     )