call method
Implementation
@override
Object? call(Interpreter interpreter, List<Object?> arguments,
Map<Symbol, Object?> namedArguments) {
Widget? child;
var childParsed = namedArguments[const Symbol('child')];
if (childParsed != null) {
child = childParsed as Widget;
}
double opacity =
parseDouble(namedArguments[const Symbol('opacity')]) ?? 1.0;
return Opacity(
opacity: opacity,
child: child,
);
}