n class="feature">inherited</span></div>

        </section>
        
<section class="desc markdown">
  <p>Controls how one widget replaces another widget in the tree.</p>
<p>If the <a href="https://api.flutter.dev/flutter/dart-core/Object/runtimeType.html">runtimeType</a> and <a href="../../gs_form_widget_fields_number_field/GSNumberField/key.html">key</a> properties of the two widgets are
<a href="../../gs_form_widget_fields_number_field/GSNumberField/operator_equals.html">operator==</a>, respectively, th