ColourPickerIcon constructor Null safety

const ColourPickerIcon(
  1. {Key? key,
  2. required void onColourChanged(
    1. Color
    ),
  3. Color? initialColour}
)

Implementation

const ColourPickerIcon({
  Key? key,
  required this.onColourChanged,
  this.initialColour,
}) : super(key: key);