an class="parameter-name">test</span>(<span class="parameter" id="test-param-element"><span class="type-annotation">E</span> <span class="parameter-name">element</span></span>), [</span> <span class="parameter" id="lastIndexWhere-param-start"><span class="type-annotation"><a href="dart-core/int-class.html">int</a></span> <span class="parameter-name">start</span></span> ])
            <span class="returntype parameter">&#8594; <a href="dart-core/int-class.html">int</a></span>
          </span>
              