Newbie: How to Match on Either type

[khtan]

In the documentation ( https://docs.vavr.io/#_patterns ), there is an example of matching the Option type :

Match(option).of(
Case($Some($()), "defined"),
Case($None(), "empty")
);

What is the canonical way to match Either<X,Y> type? I tried a similar pattern but it is not supported.

Either<String, Double> e = Right(12.0);

String x = Match(e).of(
Case($Right($()), v -> v.get()),
Case($Left($()), v -> v.getLeft().toString())
);

[danieldietrich]

Did you import the patterns from io.vavr.Patterns?