}

    static final class DuplicateKey {
      private final Object key;
      private final Object value1;
      private final Object value2;

      DuplicateKey(Object key, Object value1, Object value2) {
        this.key = key;
        this.value1 = value1;
        this.value2 = value2;
      }

      IllegalArgumentException exception() {
        return new IllegalArgumentException(

    builder.put("key", "value");
    assertThat(builder.build().entries()).containsExactly(Maps.immutableEntry("key", "value"));
  }

  public void testBuilderWithExpectedKeysPositive() {
    ImmutableSetMultimap.Builder<String, String> builder =
        ImmutableSetMultimap.builderWithExpectedKeys(1);
    builder.put("key", "value");

        list.add("a-value");
        Object value = new ValueHolder(list);

        assertNull(ReflectionValueExtractor.evaluate("h.value[", value));
        assertNull(ReflectionValueExtractor.evaluate("h.value[]", value));
        assertNull(ReflectionValueExtractor.evaluate("h.value[a]", value));
        assertNull(ReflectionValueExtractor.evaluate("h.value[0", value));

  // MultimapPutTester tests non-duplicate values, but ignores ordering

  @MapFeature.Require(SUPPORTS_PUT)
  public void testPutAddsValueAtEnd() {
    for (K key : sampleKeys()) {
      for (V value : sampleValues()) {
        resetContainer();

        List<V> values = multimap().get(key);
        List<V> expectedValues = copyToList(values);

        assertTrue(multimap().put(key, value));
        expectedValues.add(value);

                for sub_value in value:
                    tg.start_soon(process_fn, sub_value.read)
            value = serialize_sequence_value(field=field, value=results)
        if value is not None:
            values[field.alias] = value
    for key, value in received_body.items():
        if key not in values:
            values[key] = value
    return values


async def request_body_to_args(

   * <p>Though the method signature doesn't say so explicitly, the returned map has {@link Set}
   * values.
   */
  @Override
  public Map<K, Collection<V>> asMap() {
    return super.asMap();
  }

  /**
   * Stores a key-value pair in the multimap.
   *
   * @param key key to store in the multimap
   * @param value value to store in the multimap

   * <p>Though the method signature doesn't say so explicitly, the returned map has {@link Set}
   * values.
   */
  @Override
  public Map<K, Collection<V>> asMap() {
    return super.asMap();
  }

  /**
   * Stores a key-value pair in the multimap.
   *
   * @param key key to store in the multimap
   * @param value value to store in the multimap

    }

    /**
     * Appends {@code values}, in order, to the end of the values the built {@link
     * ImmutableLongArray} will contain.
     */
    @CanIgnoreReturnValue
    public Builder addAll(ImmutableLongArray values) {
      ensureRoomFor(values.length());
      System.arraycopy(values.array, values.start, array, count, values.length());
      count += values.length();
      return this;
    }

  /** Returns an immutable array containing the given values, in order. */
  public static ImmutableIntArray copyOf(int[] values) {
    return values.length == 0 ? EMPTY : new ImmutableIntArray(Arrays.copyOf(values, values.length));
  }

  /** Returns an immutable array containing the given values, in order. */
  public static ImmutableIntArray copyOf(Collection<Integer> values) {

    // Populate the results list with null initially.
    for (int i = 0; i < futures.size(); ++i) {
      values.add(null);
    }

    this.values = values;
  }

  @Override
  final void collectOneValue(int index, @ParametricNullness V returnValue) {
    @RetainedLocalRef List<@Nullable Present<V>> localValues = values;
    if (localValues != null) {
      localValues.set(index, new Present<>(returnValue));
    }
  }