ation">int</span> <span class="parameter-name">startIndex</span></span>])
                      &#8594;
                      <span class="returntype">int</span>
                  </span>
              </dt>
              <dd>
                  <div>
                    <span class="is-inherited">inherited</span>
                  </div>
                  Returns the last index in the list <code class="prettyprint lang-dart">a</code> of the given <code class="prettyprint lang-dart">element</code>, starting
