"type-annotation">V</span> <span class="parameter-name">ifAbsent</span>()</span> })
            <span class="returntype parameter">&#8594; V</span>
          </span>
                  </dt>
        <dd>
          Updates the value for the provided <code>key</code>. <a href="dart-collection/MapView/update.html">[...]</a>
                  <div class="features">override</div>
</dd>
        <dt id="updateAll" class="callable">
          <span class="name"><a href="dart-collection/MapView/updateAll.html">update