你好，我想知道uniapp如何复写组件，有没有demo源码可以参考 文档里面的generic:指令在uniapp里面也是这种写法吗 <chat bind:queryCallback="getQueryCallback" generic:queryMessage="queryMessage" generic:textMessage="customTextMessage" generic:weatherMessage="customWeatherMessage" generic:imageMessage="customImageMessage" generic:musicMessage="customMusicMessage" generic:newsMessage="customNewsMessage" generic:unsupportedMessage="customUnsupportedMessage" generic:guideCard="customGuideCard" generic:operateCard="customoperateCard" generic:miniprogramMessage="customMiniprogramMessage" generic:h5Message="customh5Message" generic:welcomeCard="customWelcomeCard" generic:feedsCard="customFeedsCard" > </chat>