.flutter.dev/flutter/dart-core/override-constant.html">override</a></li>
    </ol>
  </div>

<span class="returntype"><a href="https://api.flutter.dev/flutter/dart-core/bool-class.html">bool</a></span>
<span class="name ">isValid</span>(<wbr>)

      <div class="features"><span class="feature">override</span></div>

    </section>
    


    
<section class="summary source-code" id="source">
  <h2><span>Implementation</span></h2>
  <pre class="language-dart"><code class="language-dart">@override
bool isVali