automaticallyImplyLeading property Null safety
final
Controls whether we should try to imply the leading widget if null.
If true and leading is null, automatically try to deduce what the leading widget should be. If false and leading is null, leading space is given to title. If leading widget is not null, this parameter has no effect.
This property is used to configure an AppBar.
Implementation
final bool automaticallyImplyLeading;