ection class="multi-line-signature">
          
          <a href="https://api.flutter.dev/flutter/widgets/Icon-class.html">Icon</a>?
          <span class="name ">onIcon</span>
          <div class="features"><span class="feature">final</span></div>

        </section>
        

        
<section class="summary source-code" id="source">
  <h2><span>Implementation</span></h2>
  <pre class="language-dart"><code class="language-dart">final Icon? onIcon;</code></pre>
</section>


  </div> <!-- /.main-content -