f="dart-collection/MapMixin/keys.html">[...]</a>
          <div class="features">read-only</div>
</dd>
        <dt id="length" class="property">
          <span class="name"><a href="dart-collection/MapMixin/length.html">length</a></span>
          <span class="signature">&#8594; <a href="dart-core/int-class.html">int</a></span>
        </dt>
        <dd>
          The number of key/value pairs in the map.
          <div class="features">read-only</div>
</dd>
        <dt id="values" class="property">
      