this.existNextPage = existNextPage;
    }

    /**
     * Gets the number of records to display per page.
     * If page size is not set or is invalid, returns the default page size.
     *
     * @return page size
     */
    public int getPageSize() {
        if (pageSize <= 0) {
            pageSize = getDefaultPageSize();
        }
        return pageSize;
    }

app = FastAPI()

items = {"foo": {"name": "Fighters", "size": 6}, "bar": {"name": "Tenders", "size": 3}}


@app.put("/items/{item_id}")
async def upsert_item(
    item_id: str,
    name: Annotated[str | None, Body()] = None,
    size: Annotated[int | None, Body()] = None,
):
    if item_id in items:
        item = items[item_id]
        item["name"] = name
        item["size"] = size
        return item
    else:

  private final transient int size;

  @LazyInit private transient @Nullable ImmutableSet<E> elementSet;

  RegularImmutableMultiset(ObjectCountHashMap<E> contents) {
    this.contents = contents;
    long size = 0;
    for (int i = 0; i < contents.size(); i++) {
      size += contents.getValue(i);
    }
    this.size = Ints.saturatedCast(size);
  }

  @Override
  boolean isPartialView() {

      newDelegate.addAll(delegate);
      this.table = newDelegate;
      return;
    }
    int size = this.size;
    if (size < requireEntries().length) {
      resizeEntries(size);
    }
    int minimumTableSize = CompactHashing.tableSize(size);
    int mask = hashTableMask();
    if (minimumTableSize < mask) { // smaller table size will always be less than current mask

        // The validation in getBuffer() ensures size is within bounds (0 < size <= 1MB)
        assertTrue(buffer.length > 0, "Buffer size should be positive");
        assertTrue(buffer.length <= 0x100000, "Buffer size should not exceed 1MB");
    }

    /**
     * Test that releaseBuffer validates buffer before accepting it.
     */
    @Test

   */
  @CanIgnoreReturnValue
  private @Nullable MoveDesc<E> removeAt(int index) {
    checkPositionIndex(index, size);
    modCount++;
    size--;
    if (size == index) {
      queue[size] = null;
      return null;
    }
    E actualLastElement = elementData(size);
    int lastElementAt = heapForIndex(size).swapWithConceptuallyLastElement(actualLastElement);
    if (lastElementAt == index) {

    assertEquals(1, Iterators.size(registry.getSubscribers(1)));

    registry.register(new IntegerSubscriber());
    assertEquals(3, Iterators.size(registry.getSubscribers("")));
    assertEquals(1, Iterators.size(registry.getSubscribers(new Object())));
    assertEquals(2, Iterators.size(registry.getSubscribers(1)));
  }

  public void testGetSubscribers_returnsImmutableSnapshot() {

    }

    /**
     * Get the preferred size for send operations
     *
     * @return preferred send size in bytes
     */
    public int getPreferredSendSize() {
        return preferredSendSize;
    }

    /**
     * Set the preferred size for send operations
     *
     * @param preferredSendSize preferred send size in bytes
     */

   * #writeTo(OutputStream)} method. This method can be useful if you need to know the serialization
   * size before writing to pre-allocated space (e.g., for memory-mapped files or fixed-size
   * records).
   *
   * @since NEXT
   */
  public long serializedSize() {
    // We return a long (and not an int) because the max serialized size is approximately
    // 17 billion bytes (2^31 * 8 bytes).

    /** Configuration name for identifying this data source */
    @Required
    @Size(max = 200)
    public String name;

    /** Optional description of this data configuration */
    @Size(max = 1000)
    public String description;

    /** Handler class name for processing this data source */
    @Required
    @CustomSize(maxKey = "form.admin.max.input.size")
    public String handlerName;