V v7,
      K k8,
      V v8,
      K k9,
      V v9) {
    return RegularImmutableBiMap.fromEntries(
        entryOf(k1, v1),
        entryOf(k2, v2),
        entryOf(k3, v3),
        entryOf(k4, v4),
        entryOf(k5, v5),
        entryOf(k6, v6),
        entryOf(k7, v7),
        entryOf(k8, v8),
        entryOf(k9, v9));
  }
  /**

      V v7,
      K k8,
      V v8,
      K k9,
      V v9) {
    checkEntryNotNull(k1, v1);
    checkEntryNotNull(k2, v2);
    checkEntryNotNull(k3, v3);
    checkEntryNotNull(k4, v4);
    checkEntryNotNull(k5, v5);
    checkEntryNotNull(k6, v6);
    checkEntryNotNull(k7, v7);
    checkEntryNotNull(k8, v8);
    checkEntryNotNull(k9, v9);
    return new RegularImmutableBiMap<K, V>(

      K k5,
      V v5,
      K k6,
      V v6,
      K k7,
      V v7,
      K k8,
      V v8,
      K k9,
      V v9) {
    return new RegularImmutableBiMap<K, V>(
        ImmutableMap.of(k1, v1, k2, v2, k3, v3, k4, v4, k5, v5, k6, v6, k7, v7, k8, v8, k9, v9));
  }

  public static <K, V> ImmutableBiMap<K, V> of(
      K k1,
      V v1,
      K k2,
      V v2,
      K k3,