import java.lang.annotation.Retention;
import java.lang.annotation.Target;

/**
 * Annotates a "top-level" type-variable usage that takes its nullness from the type argument
 * supplied by the user of the class. For example, {@code Multiset.Entry.getElement()} returns
 * {@code @ParametricNullness E}, which means:
 *
 * <ul>
 *   <li>{@code getElement} on a {@code Multiset.Entry<@NonNull String>} returns {@code @NonNull

import java.lang.annotation.Retention;
import java.lang.annotation.Target;

/**
 * Annotates a "top-level" type-variable usage that takes its nullness from the type argument
 * supplied by the user of the class. For example, {@code Multiset.Entry.getElement()} returns
 * {@code @ParametricNullness E}, which means:
 *
 * <ul>
 *   <li>{@code getElement} on a {@code Multiset.Entry<@NonNull String>} returns {@code @NonNull

{content:"\f287"}.fa-user:before{content:"\f007"}.fa-user-alt:before{content:"\f406"}.fa-user-alt-slash:before{content:"\f4fa"}.fa-user-astronaut:before{content:"\f4fb"}.fa-user-check:before{content:"\f4fc"}.fa-user-circle:before{content:"\f2bd"}.fa-user-clock:before{content:"\f4fd"}.fa-user-cog:before{content:"\f4fe"}.fa-user-edit:before{content:"\f4ff"}.fa-user-friends:before{content:"\f500"}.fa-user-graduate:before{content:"\f501"}.fa-user-injured:before{content:"\f728"}.fa-user-lock:before{c...

        "description": "The pretender",
        "price": 42.0,
        "tax": 3.2
    },
    "user": {
        "username": "dave",
        "full_name": "Dave Grohl"
    }
}
```

/// note

请注意，即使 `item` 的声明方式与之前相同，但现在它被期望通过 `item` 键内嵌在请求体中。

///

**FastAPI** 将自动对请求中的数据进行转换，因此 `item` 参数将接收指定的内容，`user` 参数也是如此。

它将执行对复合数据的校验，并且像现在这样为 OpenAPI 模式和自动化文档对其进行记录。

## 请求体中的单一值

        "price": 42.0,
        "tax": 3.2
    },
    "user": {
        "username": "dave",
        "full_name": "Dave Grohl"
    }
}
```

/// note | "備考"

以前と同じように`item`が宣言されていたにもかかわらず、`item`はキー`item`を持つボディの内部にあることが期待されていることに注意してください。

///

**FastAPI** はリクエストから自動で変換を行い、パラメータ`item`が特定の内容を受け取り、`user`も同じように特定の内容を受け取ります。

複合データの検証を行い、OpenAPIスキーマや自動ドキュメントのように文書化してくれます。

## ボディ内の単数値

        Credentials setCreds = testCtx.getCredentials();
        assertThat(setCreds, CoreMatchers.is(CoreMatchers.instanceOf(NtlmPasswordAuthenticator.class)));
        NtlmPasswordAuthenticator setCredsNtlm = setCreds.unwrap(NtlmPasswordAuthenticator.class);
        assertEquals("TEST", setCredsNtlm.getUserDomain());
        assertEquals("test-user", setCredsNtlm.getUsername());

//// tab | Linux, macOS

```plaintext
/home/user/code/awesome-project/.venv/bin:/usr/bin:/bin:/usr/sbin:/sbin
```

That means that the system will now start looking first look for programs in:

```plaintext
/home/user/code/awesome-project/.venv/bin
```

before looking in the other directories.

            Path result = getCanonicalPath(context.parserRequest.cwd());
            context.systemPropertiesOverrides.put("user.dir", result.toString());
            return result;
        } else {
            return getCanonicalPath(Paths.get(System.getProperty("user.dir")));
        }
    }

    protected Path getInstallationDirectory(LocalContext context) throws ParserException {
        Path result;

    assertThat(request.url.toString()).isEqualTo("http://example.com/")
    assertThat(request.header("User-Agent")).isEqualTo("foo")
    assertThat(request.body).isNull()
  }

  @Test
  fun defaultUserAgent() {
    val request = fromArgs("http://example.com").createRequest()
    assertThat(request.header("User-Agent")!!).startsWith("okcurl/")
  }

  @Test
  fun headerSplitWithDate() {
    val request =

     */
    @Nonnull
    InputStream openStream() throws IOException;

    /**
     * Provides a user-friendly hint about the location of the source.
     * This could be a local file path, a URI or just an empty string.
     * The intention is to assist users during error reporting.
     *
     * @return a user-friendly hint about the location of the source, never {@code null}
     */
    @Nonnull
    String getLocation();