navBar property
CupertinoPageScaffold.navigationBar or Scaffold.appBar
If this properties is null, then appBar is use.
If this parameter is null, then appBar will be used
Implementation
final BaseAppBar? navBar;
CupertinoPageScaffold.navigationBar or Scaffold.appBar
If this properties is null, then appBar is use.
If this parameter is null, then appBar will be used
final BaseAppBar? navBar;