he class from either a
superclass or an interface.</p>
<p>Use the <code>@override</code> annotation judiciously and only for methods where
the superclass is not under the programmer's control, the superclass is in a
different library or package, and it is not considered stable.
In any case, the use of <code>@override</code> is optional.</p>
<p>For example, the annotation is intentionally not used in the Dart platform
libraries, since they only depend on themselves.</p>
      </section>
            <section 