anglesideangle

import java.util.Objects;
import java.util.Optional;
import java.util.function.Consumer;
import java.util.function.Function;
import java.util.function.Supplier;
import java.util.stream.Stream;

public sealed interface Option<T> {
    record Some<T>(T value) implements Option<T> {}
    final class None<T> implements Option<T> {