      <span class="returntype">void</span>
            <span class="name ">operator []=</span>(
            <br>
            <div class="parameters">
                <span class="parameter" id="[]=-param-index"><span class="type-annotation">int</span> <span class="parameter-name">index</span></span>,<br><span class="parameter" id="[]=-param-value"><span class="type-annotation"><a href="polymer_app_layout/MimeType-class.html">MimeType</a></span> <span class="parameter-name">value</span></span>
            </