lass="parameter" id="param-"><span class="type-annotation"><a href="https://api.flutter.dev/flutter/dart-core/int-class.html">int</a></span>, </span><span class="parameter" id="param-"><span class="type-annotation"><a href="https://api.flutter.dev/flutter/dart-core/String-class.html">String</a></span></span>)</span></span>
          <span class="name ">onClose</span>
          <div class="features">read / write</div>
        </section>
                <section class="summary source-code" id="source">
      