* java.util.stream} Javadoc), that order is preserved, but entries are <a
   * href="ImmutableMultimap.html#iteration">grouped by key</a>.
   *
   * <p>Example:
   *
   * {@snippet :
   * static final Multimap<Character, String> FIRST_LETTER_MULTIMAP =
   *     Stream.of("banana", "apple", "carrot", "asparagus", "cherry")

        assertViolations(result, 1, 0, 0);

        assertEquals(
                "'dependencies.dependency[com.example.group:testinvalidpom:0.0.1-SNAPSHOT]' for com.example.group:testinvalidpom:0.0.1-SNAPSHOT is referencing itself.",
                result.getFatals().get(0));
    }

    @Test

```console
$ pip install "fastapi[standard]"

---> 100%
```

</div>

**Примітка**: переконайтеся, що ви взяли `"fastapi[standard]"` у лапки, щоб це працювало в усіх терміналах.

## Приклад { #example }

### Створіть { #create-it }

Створіть файл `main.py` з:

```Python
from fastapi import FastAPI

app = FastAPI()


@app.get("/")
def read_root():

import okhttp3.RequestBody;
import okhttp3.Response;

public final class RequestBodyCompression {
  /**
   * The Google API KEY for OkHttp recipes. If you're using Google APIs for anything other than
   * running these examples, please request your own client ID!
   *
   * https://console.developers.google.com/project
   */
  public static final String GOOGLE_API_KEY = "AIzaSyAx2WZYe0My0i-uGurpvraYJxO7XNbwiGs";

    /**
     * Creates an {@link java.io.InputStream} for reading bytes from a file on
     * an SMB server addressed by the <code>url</code> parameter. See {@link
     * jcifs.smb1.smb1.SmbFile} for a detailed description and examples of the smb
     * URL syntax.
     *
     * @param url An smb URL string representing the file to read from
     */

    /**
     * Creates an input stream for reading from the specified SMB URL
     *

        labelType2.setName("Test Label 2");
        labelType2.setValue("test2");
        labelType2.setPermissions(new String[] { "role1", "role2" });
        labelType2.setVirtualHost("example.com");
        // Locale is derived from value, not set directly
        labelType2.setIncludedPaths("/admin.*");
        labelType2.setExcludedPaths("");
        labelTypeList.add(labelType2);

 * href="http://en.wikipedia.org/wiki/Decorator_pattern">decorator pattern</a>.
 *
 * <p><b>Warning:</b> The methods of {@code ForwardingNavigableSet} forward <i>indiscriminately</i>
 * to the methods of the delegate. For example, overriding {@link #add} alone <i>will not</i> change
 * the behavior of {@link #addAll}, which can lead to unexpected behavior. In this case, you should

Assim como quando declaramos parâmetros de consulta, quando um atributo do modelo possui um valor padrão, ele não é obrigatório. Caso contrário, é obrigatório. Use `None` para torná-lo apenas opcional.

Por exemplo, o modelo acima declara um JSON "`object`" (ou `dict` no Python) como esse:

```JSON
{
    "name": "Foo",
    "description": "An optional description",
    "price": 45.2,
    "tax": 3.5
}
```

# 以類別作為相依性 { #classes-as-dependencies }

在更深入了解 **相依性注入（Dependency Injection）** 系統之前，我們先把前一個範例升級一下。

## 前一個範例中的 `dict` { #a-dict-from-the-previous-example }

在前一個範例中，我們從相依項（"dependable"）回傳了一個 `dict`：

{* ../../docs_src/dependencies/tutorial001_an_py310.py hl[9] *}

但接著我們在路徑操作函式（*path operation function*）的參數 `commons` 中取得的是一個 `dict`。

而我們知道，編輯器對 `dict` 無法提供太多輔助（例如自動完成），因為它無法預先知道其中的鍵與值的型別。

我們可以做得更好...

 * href="http://en.wikipedia.org/wiki/Decorator_pattern">decorator pattern</a>.
 *
 * <p><b>Warning:</b> The methods of {@code ForwardingMultiset} forward <b>indiscriminately</b> to
 * the methods of the delegate. For example, overriding {@link #add(Object, int)} alone <b>will
 * not</b> change the behavior of {@link #add(Object)}, which can lead to unexpected behavior. In