dler.Whole</a>&lt;T&gt;&nbsp;handler)</code>
<div class="block">Register to handle to incoming messages in this conversation.</div>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../javax/websocket/Session.html#addMessageHandler-javax.websocket.MessageHandler-">addMessageHandler</a></span>(<a href="../../javax/websocket/MessageHandler.html" title="interface in javax.websocket">MessageHandler</a>&nbsp;ha