ement</span>, </span><wbr><span class="parameter" id="indexOf-param-start">[<span class="type-annotation"><a href="../dart-core/int-class.html">int</a></span> <span class="parameter-name">start</span> = <span class="default-value">0</span>]</span><wbr>)
            <span class="returntype parameter">&#8594; <a href="../dart-core/int-class.html">int</a></span>
          </span>
                  </dt>
        <dd class="inherited">
          Returns the first index of <code>element</code> in this list. <a hr