if err != nil {
			return nil, err
		}
		fn := filepath.Join(dirPath, "trace.out")
		f, err := Create(fn)
		if err != nil {
			return nil, err
		}
		err = trace.Start(f)
		if err != nil {
			return nil, err
		}
		prof.ext = "trace"
		prof.stopFn = func() ([]byte, error) {
			trace.Stop()
			err := f.Close()
			if err != nil {
				return nil, err
			}

Salah satu dari:

* `POST`
* `GET`
* `PUT`
* `DELETE`

...dan operasi lainnya yang unik:

* `OPTIONS`
* `HEAD`
* `PATCH`
* `TRACE`

Dalam protokol HTTP, anda bisa berkomunikasi ke setiap path menggunakan satu (atau lebih) metode di atas.

---

Ketika membuat API, anda umumnya menggunakan metode HTTP tertentu untuk proses tertentu.

```JSON
{
    "name": "Foo",
    "description": "선택적인 설명란",
    "price": 45.2,
    "tax": 3.5
}
```

...`description`과 `tax`는 (기본 값이 `None`으로 되어 있어) 선택적이기 때문에, 이 JSON "`object`"는 다음과 같은 상황에서도 유효합니다:

```JSON
{
    "name": "Foo",
    "price": 45.2
}
```

## 매개변수로서 선언하기

여러분의 *경로 작동*에 추가하기 위해, 경로 매개변수 그리고 쿼리 매개변수에서 선언했던 것과 같은 방식으로 선언하면 됩니다.

#### Operação

"Operação" aqui se refere a um dos "métodos" HTTP.

Um dos:

* `POST`
* `GET`
* `PUT`
* `DELETE`

...e os mais exóticos:

* `OPTIONS`
* `HEAD`
* `PATCH`
* `TRACE`

No protocolo HTTP, você pode se comunicar com cada rota usando um (ou mais) desses "métodos".

---

Ao construir APIs, você normalmente usa esses métodos HTTP para executar uma ação específica.

```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):

    "description": "The bartenders",
    "price": 62,
    "tax": 20.2
}
```

serán incluidos en el response.

#### Datos con los mismos valores que los valores por defecto

Si los datos tienen los mismos valores que los valores por defecto, como el artículo con ID `baz`:

```Python hl_lines="3  5-6"
{
    "name": "Baz",
    "description": None,
    "price": 50.2,
    "tax": 10.5,
    "tags": []

      if: ${{ matrix.language == 'java' }}

    # ℹ️ Command-line programs to run using the OS shell.
    # 📚 https://git.io/JvXDl

    # ✏️ If the Autobuild fails above, remove it and uncomment the following three lines
    #    and modify them (or add more) to build your code if your project
    #    uses a compiled language

    #- run: |
    #   make bootstrap
    #   make release

    - name: Perform CodeQL Analysis

        // Verify
        assertNotNull(deserialized);
        assertNull(deserialized.getMessage());
        assertNull(deserialized.getCause());
    }

    public void test_stackTrace() {
        // Test that stack trace is properly maintained
        DictionaryExpiredException exception = new DictionaryExpiredException();
        StackTraceElement[] stackTrace = exception.getStackTrace();

        assertNotNull(stackTrace);

        // Both instances should be of the same class
        assertEquals(exception1.getClass(), exception2.getClass());
    }

    public void test_stackTrace() {
        // Test that the exception has a proper stack trace
        FessUserNotFoundException exception = new FessUserNotFoundException("testuser");

        StackTraceElement[] stackTrace = exception.getStackTrace();
        assertNotNull(stackTrace);

    /**
     * The name or type of the error that occurred.
     * This field provides a categorization of the failure type.
     */
    public String errorName;

    /**
     * The detailed error log or stack trace for the failure.
     * This field contains the full error information for debugging purposes.
     */
    public String errorLog;

    /**
     * The number of times this URL has failed.