`await` 👷, ⚫️ ✔️ 🔘 🔢 👈 🐕‍🦺 👉 🔀. 👈, 👆 📣 ⚫️ ⏮️ `async def`:

```Python hl_lines="1"
async def get_burgers(number: int):
    # Do some asynchronous stuff to create the burgers
    return burgers
```

...↩️ `def`:

```Python hl_lines="2"
# This is not asynchronous
def get_sequential_burgers(number: int):
    # Do some sequential stuff to create the burgers
    return burgers
```

     * @param index the index of the value to retrieve
     * @return the cleaned value at the specified index, or empty string if index is out of bounds
     */
    static String getValue(final List<String> list, final int index) {
        if (index >= list.size()) {
            return StringUtil.EMPTY;
        }
        String item = list.get(index).trim();
        if (StringUtil.isBlank(item)) {
            return StringUtil.EMPTY;

///

### Paso 5: retorna el contenido

{* ../../docs_src/first_steps/tutorial001.py hl[8] *}

Puedes retornar un `dict`, `list`, valores singulares como `str`, `int`, etc.

También puedes retornar modelos de Pydantic (verás más sobre eso más adelante).

        // Arrange
        CommonServerMessageBlockRequest req = mock(CommonServerMessageBlockRequest.class);
        when(req.getOverrideTimeout()).thenReturn(1234);

        // Act
        int timeout = transport.getResponseTimeout(req);

        // Assert
        assertEquals(1234, timeout);
    }

    @Test
    @DisplayName("getResponseTimeout falls back to config for non-SMB requests")

#### `list` 사용하기

`List[str]` 대신 `list`를 직접 사용할 수도 있습니다:

{* ../../docs_src/query_params_str_validations/tutorial013.py hl[7] *}

/// note | 참고

이 경우 FastAPI는 리스트의 내용을 검사하지 않음을 명심하기 바랍니다.

예를 들어, `List[int]`는 리스트 내용이 정수인지 검사(및 문서화)합니다. 하지만 `list` 단독일 경우는 아닙니다.

///

## 더 많은 메타데이터 선언

매개변수에 대한 정보를 추가할 수 있습니다.

해당 정보는 생성된 OpenAPI에 포함되고 문서 사용자 인터페이스 및 외부 도구에서 사용됩니다.

/// note | 참고

    )
  }

  private fun assertEvents(vararg expected: String) {
    val actual = generateSequence { routePlanner.events.poll() }.toList()
    assertThat(actual).containsExactly(*expected)
  }

  private val Int.ms: Long
    get() = this * 1_000_000L

{* ../../docs_src/query_params_str_validations/tutorial013_an_py39.py hl[9] *}

/// note | Hinweis

Beachten Sie, dass FastAPI in diesem Fall den Inhalt der Liste nicht überprüft.

Zum Beispiel würde `List[int]` überprüfen (und dokumentieren) dass die Liste Ganzzahlen enthält. `list` alleine macht das nicht.

///

## Deklarieren von mehr Metadaten

Sie können mehr Informationen zum Parameter hinzufügen.

  }

  /**
   * Returns the number of key-value mappings in this map. If the map contains more than {@code
   * Integer.MAX_VALUE} elements, returns {@code Integer.MAX_VALUE}.
   */
  public int size() {
    return map.size();
  }

  /** Returns {@code true} if this map contains no key-value mappings. */
  public boolean isEmpty() {
    return map.isEmpty();
  }

  /**

        assertTrue("Special character commands should be settable", true);

        // Test with very long commands
        final StringBuilder longCommand = new StringBuilder("echo ");
        for (int i = 0; i < 1000; i++) {
            longCommand.append("test");
        }

        generator.setCommandList(Collections.singletonList(longCommand.toString()));
        assertTrue("Long commands should be settable", true);

        saturatedAdd(loadExceptionCount, other.loadExceptionCount),
        saturatedAdd(totalLoadTime, other.totalLoadTime),
        saturatedAdd(evictionCount, other.evictionCount));
  }

  @Override
  public int hashCode() {
    return Objects.hash(
        hitCount, missCount, loadSuccessCount, loadExceptionCount, totalLoadTime, evictionCount);
  }

  @Override
  public boolean equals(@Nullable Object object) {