class FabricTopicAdmin implements IEventTopic {

    @Override
    public TopicPage list(Integer pageIndex, Integer pageSize, String channelName) throws BrokerException {

        ParamCheckUtils.validatePagIndexAndSize(pageIndex, pageSize);
        validateChannelName(channelName);

        return fabricDelegate.getFabricMap().get(channelName).listTopicName(pageIndex, pageSize);
    }

    public  FabricTopicAdmin(FabricDelegate fabricDelegate);

}