title: What does mean of using the "this" keyword in Dart?
body: <p>I'm sorry if this sounds like an extremely foolish question but it's really been bugging me.</p>
  <p>What is the &quot;this.&quot; that I see? Whenever I see the documentation in flutter I see it used in things like the following in the documentation:</p>
  <pre><code>this.initialRoute,
  this.onGenerateRoute,
  this.onGenerateInitialRoutes,
  this.onUnknownRoute,
  this.navigatorObservers
  </code></pre>
  <p>I'll be more than happy to also read up any links or documentation regarding it.</p>