 matching callback function</p></div><h3>Parameters</h3><dl><dt>cb-&gt;Bool</dt><dd><p>A callback which takes an entity and returns whether or not it
should be matched or not.</p></dd></dl><h3>Returns</h3><p><code>this</code></p>                                                                                                <div class="field-signature"><a name="exclude"></a>            <code>        <a href="#exclude"><span class="identifier">exclude</span></a>             (                                ti