call method
Implementation
@override
Object call(Interpreter interpreter, List<Object?> arguments,
Map<Symbol, Object?> namedArguments) {
double start = 0;
double end = 0;
if (arguments.length == 2) {
start = parseDouble(arguments[0]) ?? 0;
end = parseDouble(arguments[1]) ?? 0;
}
return AlignmentDirectional(start, end);
}