tester.testAllPublicInstanceMethods(CharMatcher.any());
    tester.testAllPublicInstanceMethods(CharMatcher.anyOf("abc"));
  }

  private static final CharMatcher WHATEVER =
      new CharMatcher() {
        @Override
        public boolean matches(char c) {
          throw new AssertionFailedError("You weren't supposed to actually invoke me!");
        }
      };

```

////

## Универсальная поддержка редактора

И вы получаете поддержку редактора везде.

Даже для элементов внутри списков:

<img src="/img/tutorial/body-nested-models/image01.png">

Вы не могли бы получить такую поддержку редактора, если бы работали напрямую с `dict`, а не с моделями Pydantic.

이를 아래처럼:

```Python hl_lines="15"
{!../../docs_src/body_nested_models/tutorial008.py!}
```

## 어디서나 편집기 지원

그리고 어디서나 편집기 지원을 받을수 있습니다.

리스트 내부 항목의 경우에도:

<img src="/img/tutorial/body-nested-models/image01.png">

Pydantic 모델 대신에 `dict`를 직접 사용하여 작업할 경우, 이러한 편집기 지원을 받을수 없습니다.

하지만 수신한 딕셔너리가 자동으로 변환되고 출력도 자동으로 JSON으로 변환되므로 걱정할 필요는 없습니다.

## 단독 `dict`의 본문

And it will be annotated / documented accordingly too.

## Nested Models

Each attribute of a Pydantic model has a type.

But that type can itself be another Pydantic model.

So, you can declare deeply nested JSON "objects" with specific attribute names, types and validations.

All that, arbitrarily nested.

### Define a submodel

For example, we can define an `Image` model:

```Python hl_lines="15"
{!> ../../docs_src/body_nested_models/tutorial008.py!}
```

////

## 无处不在的编辑器支持

你可以随处获得编辑器支持。

即使是列表中的元素：

<img src="https://fastapi.tiangolo.com/img/tutorial/body-nested-models/image01.png">

如果你直接使用 `dict` 而不是 Pydantic 模型，那你将无法获得这种编辑器支持。

但是你根本不必担心这两者，传入的字典会自动被转换，你的输出也会自动被转换为 JSON。

## 任意 `dict` 构成的请求体

你也可以将请求体声明为使用某类型的键和其他类型值的 `dict`。

import junit.framework.Test;
import junit.framework.TestSuite;

/**
 * Generates a test suite covering the {@link Set} implementations in the {@link java.util} package.
 * Can be subclassed to specify tests that should be suppressed.
 *
 * @author Kevin Bourrillion
 */
@GwtIncompatible
public class TestsForSetsInJavaUtil {
  public static Test suite() {
    return new TestsForSetsInJavaUtil().allTests();

Dann erstellen Sie einen *Pfad-Parameter*, der als Typ die gerade erstellte Enum-Klasse hat (`ModelName`):

```Python hl_lines="16"
{!../../docs_src/path_params/tutorial005.py!}
```

### Testen Sie es in der API-Dokumentation

Weil die erlaubten Werte für den *Pfad-Parameter* nun vordefiniert sind, kann die interaktive Dokumentation sie als Auswahl-Drop-Down anzeigen:

import org.junit.Ignore;

/**
 * A generic JUnit test which tests {@code retainAll} operations on a collection. Can't be invoked
 * directly; please see {@link com.google.common.collect.testing.CollectionTestSuiteBuilder}.
 *
 * @author Chris Povirk
 */
@GwtCompatible
@Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
@SuppressWarnings("JUnit4ClassUsedInJUnit3")

import org.junit.Ignore;

/**
 * A generic JUnit test which tests {@code remove} operations on a collection. Can't be invoked
 * directly; please see {@link com.google.common.collect.testing.CollectionTestSuiteBuilder}.
 *
 * @author George van den Driessche
 */
@GwtCompatible
@Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
@SuppressWarnings("JUnit4ClassUsedInJUnit3")

import org.junit.Ignore;

/**
 * A generic JUnit test which tests creation (typically through a constructor or static factory
 * method) of a map. Can't be invoked directly; please see {@link
 * com.google.common.collect.testing.MapTestSuiteBuilder}.
 *
 * @author Chris Povirk
 * @author Kevin Bourrillion
 */
@GwtCompatible(emulated = true)
@Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.