*/
  public static <K, V> ImmutableBiMap<K, V> of(K k1, V v1, K k2, V v2, K k3, V v3, K k4, V v4) {
    checkEntryNotNull(k1, v1);
    checkEntryNotNull(k2, v2);
    checkEntryNotNull(k3, v3);
    checkEntryNotNull(k4, v4);
    return new RegularImmutableBiMap<K, V>(new Object[] {k1, v1, k2, v2, k3, v3, k4, v4}, 4);
  }

  /**
   * Returns an immutable map containing the given entries, in order.
   *

    return new RegularImmutableMap<K, V>(
        entryOf(k1, v1), entryOf(k2, v2), entryOf(k3, v3), entryOf(k4, v4));
  }

  public static <K, V> ImmutableMap<K, V> of(
      K k1, V v1, K k2, V v2, K k3, V v3, K k4, V v4, K k5, V v5) {
    return new RegularImmutableMap<K, V>(
        entryOf(k1, v1), entryOf(k2, v2), entryOf(k3, v3), entryOf(k4, v4), entryOf(k5, v5));
  }

    assertTrue(multimap().putAll(k0(), newArrayList(v3(), v4())::iterator));
    assertGet(k0(), v0(), v3(), v4());
  }

  @CollectionSize.Require(absent = ZERO)
  @MapFeature.Require(SUPPORTS_PUT)
  public void testPutAllNonEmptyCollectionOnPresentKey() {
    assertTrue(multimap().putAll(k0(), newArrayList(v3(), v4())));
    assertGet(k0(), v0(), v3(), v4());
  }

  @MapFeature.Require(SUPPORTS_PUT)

    return new RegularImmutableBiMap<K, V>(ImmutableMap.of(k1, v1, k2, v2, k3, v3, k4, v4));
  }

  public static <K, V> ImmutableBiMap<K, V> of(
      K k1, V v1, K k2, V v2, K k3, V v3, K k4, V v4, K k5, V v5) {
    return new RegularImmutableBiMap<K, V>(ImmutableMap.of(k1, v1, k2, v2, k3, v3, k4, v4, k5, v5));
  }

  public static <K, V> ImmutableBiMap<K, V> of(

  build:
    runs-on: macos-14
    env:
      PARENT_BRANCH: main
    timeout-minutes: 15
    steps:
    - uses: actions/checkout@v4
    - name: Set up JDK 21
      uses: actions/setup-java@v4
      with:
        java-version: '21'
        distribution: 'temurin'
    - uses: actions/cache@v4
      with:
        path: ~/.m2/repository
        key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
        restore-keys: |

  @CollectionSize.Require(absent = ZERO)
  public void testReplaceEntry_supportedWrongValue() {
    assertFalse(getMap().replace(k0(), v3(), v4()));
    expectUnchanged();
  }

  @MapFeature.Require(SUPPORTS_PUT)
  public void testReplaceEntry_supportedAbsentKey() {
    assertFalse(getMap().replace(k3(), v3(), v4()));
    expectUnchanged();
  }

  @MapFeature.Require(value = SUPPORTS_PUT, absent = ALLOWS_NULL_VALUES)

  @CollectionSize.Require(absent = ZERO)
  public void testReplaceEntry_supportedWrongValue() {
    assertFalse(getMap().replace(k0(), v3(), v4()));
    expectUnchanged();
  }

  @MapFeature.Require(SUPPORTS_PUT)
  public void testReplaceEntry_supportedAbsentKey() {
    assertFalse(getMap().replace(k3(), v3(), v4()));
    expectUnchanged();
  }

  @MapFeature.Require(value = SUPPORTS_PUT, absent = ALLOWS_NULL_VALUES)

          V2 extends @Nullable Object,
          V3 extends @Nullable Object,
          V4 extends @Nullable Object>
      Combiner4<V1, V2, V3, V4> whenAllSucceed(
          ClosingFuture<V1> future1,
          ClosingFuture<V2> future2,
          ClosingFuture<V3> future3,
          ClosingFuture<V4> future4) {
    return new Combiner4<>(future1, future2, future3, future4);
  }

  /**

    assertTrue(multimap().putAll(k0(), newArrayList(v3(), v4())::iterator));
    assertGet(k0(), v0(), v3(), v4());
  }

  @CollectionSize.Require(absent = ZERO)
  @MapFeature.Require(SUPPORTS_PUT)
  public void testPutAllNonEmptyCollectionOnPresentKey() {
    assertTrue(multimap().putAll(k0(), newArrayList(v3(), v4())));
    assertGet(k0(), v0(), v3(), v4());
  }

  @MapFeature.Require(SUPPORTS_PUT)

        v4(),
        getMap()
            .merge(
                k0(),
                v3(),
                (oldV, newV) -> {
                  assertEquals(v0(), oldV);
                  assertEquals(v3(), newV);
                  return v4();
                }));
    expectReplacement(entry(k0(), v4()));
  }

  @MapFeature.Require(SUPPORTS_PUT)