Passing no values to an allowMultiple Option does not wrap value in List

[seaneagan]

      test('passing no values yields default value when defined', () {
        var optionValue;
        return new FunctionScript(({@Option(allowMultiple: true, defaultsTo: 'x') option}) {
          optionValue = option;
        }).execute([]).then((_) {
          expect(optionValue, ['x']);
        });
      });

      test('passing no values yields empty List when default value is null', () {
        var optionValue;
        return new FunctionScript(({@Option(allowMultiple: true) option}) {
          optionValue = option;
        }).execute([]).then((_) {
          expect(optionValue, []);
        });
      });

Both of the above tests currently, because the option is just assigned it's default value (even when it's null).