an class="type-annotation">void</span> <span class="parameter-name">cleanUp</span>(<span class="parameter" id="cleanUp-param-successValue"><span class="type-annotation">T</span> <span class="parameter-name">successValue</span></span>)</span> })
            <span class="returntype parameter">&#8594; <a href="dart-async/Future-class.html">Future</a><span class="signature">&lt;<wbr><span class="type-parameter"><a href="dart-core/List-class.html">List</a><span class="signature">&lt;<wbr><span class="type-parame