ice.im.v1.model中的类">ChatChange</a>&nbsp;afterChange)</code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><span class="typeNameLabel">P2ChatUpdatedV1Data.</span><code><span class="memberNameLink"><a href="../../../../../../../../com/lark/oapi/service/im/v1/model/P2ChatUpdatedV1Data.html#setBeforeChange-com.lark.oapi.service.im.v1.model.ChatChange-">setBeforeChange</a></span>(<a href="../../../../../../../../com/lark/oapi/service/im/v1/model/Chat