 map that satisfy the given <code>predicate</code>.
          
</dd>
        <dt id="retype" class="callable">
          <span class="name"><a href="dart-collection/MapMixin/retype.html">retype</a></span><span class="signature">&lt;RK, RV&gt;</span><span class="signature">(<wbr>)
            <span class="returntype parameter">&#8594; <a href="dart-core/Map-class.html">Map</a><span class="signature">&lt;RK, RV&gt;</span></span>
          </span>
        </dt>
        <dd>
          Provides a view of this ma