@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);
    }
@ 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
Returns a { @link Left } containing the value of this instance .