yword"></span><span class="token keyword">fun </span><a href="../-query/add-change-listener.html"><span class="token function">addChangeListener</span></a><span class="token punctuation">(</span><span class="parameters "><span class="parameter ">listener<span class="token operator">: </span><a href="../-query-change-listener/index.html">QueryChangeListener</a></span></span><span class="token punctuation">)</span><span class="token operator">: </span><a href="../-listener-token/index.html">ListenerToken</a><