Итак, если вы отправите запрос к этой *операции пути* для элемента с ID `foo`, ответ (без значений по умолчанию) будет таким:

```JSON
{
    "name": "Foo",
    "price": 50.2
}
```

/// info | Информация

В Pydantic v1 метод назывался `.dict()`, в Pydantic v2 он был помечен как устаревший (но всё ещё поддерживается) и переименован в `.model_dump()`.

  @Override
  public SampleElements<Entry<String, String>> samples() {
    return new SampleElements<>(
        mapEntry("one", "January"),
        mapEntry("two", "February"),
        mapEntry("three", "March"),
        mapEntry("four", "April"),
        mapEntry("five", "May"));
  }

  @Override
  public final BiMap<String, String> create(Object... entries) {
    @SuppressWarnings("unchecked")

     */
    @Throws(IOException::class)
    constructor(rawSource: Source) {
      rawSource.use {
        val source = rawSource.buffer()
        val urlLine = source.readUtf8LineStrict()
        // Choice here is between failing with a correct RuntimeException
        // or mostly silently with an IOException
        url = urlLine.toHttpUrlOrNull() ?: throw IOException("Cache corruption for $urlLine").also {

     */
    public SmbTreeImpl acquire(final boolean track) {
        final long usage = this.usageCount.incrementAndGet();
        if (log.isTraceEnabled()) {
            log.trace("Acquire tree " + usage + " " + this);
        }

        if (track && this.traceResource) {
            synchronized (this.acquires) {

```Python hl_lines="4  9-12  25-27"
from typing import Union

from fastapi import FastAPI
from pydantic import BaseModel

app = FastAPI()


class Item(BaseModel):
    name: str
    price: float
    is_offer: Union[bool, None] = None


@app.get("/")
def read_root():
    return {"Hello": "World"}


@app.get("/items/{item_id}")
def read_item(item_id: int, q: Union[str, None] = None):

So, if you send a request to that *path operation* for the item with ID `foo`, the response (not including default values) will be:

```JSON
{
    "name": "Foo",
    "price": 50.2
}
```

/// info

You can also use:

* `response_model_exclude_defaults=True`
* `response_model_exclude_none=True`

Então, se você enviar uma solicitação para essa *operação de rota* para o item com ID `foo`, a resposta (sem incluir valores padrão) será:

```JSON
{
    "name": "Foo",
    "price": 50.2
}
```

/// info | Informação

No Pydantic v1, o método era chamado `.dict()`, ele foi descontinuado (mas ainda suportado) no Pydantic v2 e renomeado para `.model_dump()`.

	lastRead readOp // last read operation, so that Unread* can work correctly.

	// Copying and modifying a non-zero Buffer is prone to error,
	// but we cannot employ the noCopy trick used by WaitGroup and Mutex,
	// which causes vet's copylocks checker to report misuse, as vet
	// cannot reliably distinguish the zero and non-zero cases.
	// See #26462, #25907, #47276, #48398 for history.
}

 * <li>Settings: the {@code settings.xml} can be used to provide additional repositories in the three level of settings (user, project, installation).</li>
 * </ol>

 * <li>Settings: the {@code settings.xml} can be used to provide additional repositories in the three level of settings (user, project, installation).</li>
 * </ol>