fromJson method
Implementation
@override
MaterialType? fromJson(String? json) {
if (json == null) return null;
switch (json) {
case 'button':
return MaterialType.button;
case 'canvas':
return MaterialType.canvas;
case 'card':
return MaterialType.card;
case 'circle':
return MaterialType.circle;
case 'transparency':
return MaterialType.transparency;
}
throw 'Unsuported_Json_Value';
}