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<h4>clear</h4>
<pre class="methodSignature">public&nbsp;void&nbsp;clear&#8203;(<a href="../../query/option/QueryOptions.html" title="class in com.googlecode.cqengine.query.option">QueryOptions</a>&nbsp;queryOptions)</pre>
<div class="block">Notifies the listener that all objects have been removed from the collection, and so it can take action
 and update its internal data structures.</div>
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