"parameter-name">element</span></span>, [<span class="parameter" id="indexOf-param-startIndex"><span class="type-annotation">int</span> <span class="parameter-name">startIndex</span> = <span class="default-value">0</span></span>])
                      &#8594;
                      <span class="returntype">int</span>
                  </span>
              </dt>
              <dd>
                  <div>
                    <span class="is-inherited">inherited</span>
                  </div>
               