fromJson method
Load the attributes of the widget descriptor from
Implementation
@override
SDUIWidget fromJson(Map<String, dynamic>? json) {
crossAxisCount = json?["crossAxisCount"];
mainAxisSpacing = json?["mainAxisSpacing"];
crossAxisSpacing = json?["crossAxisSpacing"];
padding = json?["padding"];
primary = json?["primary"];
return super.fromJson(json);
}