src/main/java/javascalautils/Some.java
@Override
    public <R> Either<T, R> toLeft(Supplier<R> right) {
        return Left(value);
    }
@Override
    public <R> Either<T, R> toLeft(Supplier<R> right) {
        return Left(value);
    }
Returns a {@link Left} containing the value of this instance.

@since 1.4