toJson method

Implementation

@override
String? toJson(VisualDensity? value) {
  if (value == null) return null;

  if (value == VisualDensity.comfortable) {
    return 'comfortable';
  } else if (value == VisualDensity.compact) {
    return 'compact';
  } else if (value == VisualDensity.standard) {
    return 'standard';
  }

  throw 'Json_Unsuported_Value';
}