padding property Null safety
The parts of the display that are partially obscured by system UI, typically by the hardware display "notches" or the system status bar.
If you consumed this padding (e.g. by building a widget that envelops or accounts for this padding in its layout in such a way that children are no longer exposed to this padding), you should remove this padding for subsequent descendants in the widget tree by inserting a new MediaQuery widget using the MediaQuery.removePadding factory.
final EdgeInsets padding;