 class="type-annotation">V</span> <span class="parameter-name">update</span>(<span class="parameter" id="update-param-value"><span class="type-annotation">V</span> <span class="parameter-name">value</span></span>), {</span> <span class="parameter" id="update-param-ifAbsent"><span class="type-annotation">V</span> <span class="parameter-name">ifAbsent</span>()</span> })
            <span class="returntype parameter">&#8594; V</span>
          </span>
                  </dt>
        <dd>
          Updates the 