     Removes all elements not matched by <code>test</code> from the queue. <a href="dart-collection/DoubleLinkedQueue/retainWhere.html">[...]</a>
          
</dd>
        <dt id="retype" class="callable">
          <span class="name"><a href="dart-collection/DoubleLinkedQueue/retype.html">retype</a></span><span class="signature">&lt;R&gt;</span><span class="signature">(<wbr>)
            <span class="returntype parameter">&#8594; <a href="dart-collection/Queue-class.html">Queue</a><span class="signature">&l