RayStarkMC

import org.jetbrains.annotations.NotNull;

import java.util.function.Function;

public interface Tuple2<T1, T2> {
    @NotNull
    T1 t1();

    @NotNull
    T2 t2();

RayStarkMC

import java.util.function.BiFunction;
import java.util.function.Consumer;
import java.util.function.Function;

public class Pipeline<T, R> {
    private final T value;
    Object lastReturn;

    private Pipeline(T value) {
        this.value = value;

RayStarkMC

//パッケージ略

import java.util.function.Supplier;

/**
 * クロージャテスト
 */
public class ClosureTest {
    /**
     * 可変データクラス

RayStarkMC

import java.util.Arrays;
import java.util.Objects;
import java.util.function.Consumer;
import java.util.function.Function;
import java.util.function.Predicate;
import java.util.function.Supplier;

public final class When {
    private When() {}