ture">&lt;<wbr><span class="type-parameter"><a href="dart-core/Symbol-class.html">Symbol</a></span>, <span class="type-parameter">dynamic</span>&gt;</span></span> <span class="parameter-name">namedArguments</span>, [</span> <span class="parameter" id="-param-existingArgumentNames"><span>@deprecated</span> <span class="type-annotation"><a href="dart-core/List-class.html">List</a></span> <span class="parameter-name">existingArgumentNames</span></span> ])
    </section>

    <section class="desc markdown">
   