):
            # For types
            assert isinstance(value, sequence_types)
            results: list[bytes | str] = []
            for sub_value in value:
                results.append(await sub_value.read())
            value = serialize_sequence_value(field=field, value=results)
        if value is not None:
            values[get_validation_alias(field)] = value

    }

    /**
     * Searches for role items based on the provided search criteria.
     *
     * @param form the search form containing search criteria
     * @return HTML response with filtered role results
     */
    @Execute
    @Secured({ ROLE, ROLE + VIEW })
    public HtmlResponse search(final SearchForm form) {
        copyBeanToBean(form, rolePager, op -> op.exclude(Constants.PAGER_CONVERSION_RULE));

    }

    @Test
    void testOpenConnection_UnknownProtocol_ThrowsIOException() {
        // This test verifies that attempting to open a connection for an unsupported protocol
        // results in an IOException, as no default handler should be found.
        assertThrows(IOException.class, () -> {
            handler.openConnection(new URL("unknownprotocol://somehost/path"));

                any(CommonServerMessageBlock.class));
    }

    @Test
    @DisplayName("Test multiple verify operations with mixed results")
    void testMultipleVerifyOperations() {
        // Arrange
        when(signingDigest.verify(any(byte[].class), anyInt(), anyInt(), anyInt(), any())).thenReturn(true, false, true, false, true);

        SMBUtil.writeInt4(fileSize, buffer, bufferIndex + 6);

        // Read the data
        int bytesRead = response.readParameterWordsWireFormat(buffer, bufferIndex);

        // Verify results
        assertEquals(20, bytesRead);
        assertEquals(fileAttributes, response.getAttributes());
        assertEquals(fileSize, response.getSize());

    /**
     * Performs a search for failure URLs based on the provided criteria.
     *
     * @param form the search form containing filter criteria
     * @return HTML response for the failure URL list page with search results
     */
    @Execute
    @Secured({ ROLE, ROLE + VIEW })
    public HtmlResponse search(final SearchForm form) {
        copyBeanToBean(form, failureUrlPager, op -> op.exclude(Constants.PAGER_CONVERSION_RULE));

    "price": 45.2
}
```

## 声明为参数 { #declare-it-as-a-parameter }

使用与声明路径和查询参数相同的方式，把它添加至*路径操作*：

{* ../../docs_src/body/tutorial001_py310.py hl[16] *}

...并把其类型声明为你创建的模型 `Item`。

## 结果 { #results }

仅使用这些 Python 类型声明，**FastAPI** 就可以：

* 以 JSON 形式读取请求体。
* （在必要时）把请求体转换为对应的类型。
* 校验数据。
    * 数据无效时返回清晰的错误信息，并指出错误数据的确切位置和内容。
* 把接收的数据赋值给参数 `item`。
    * 因为你把函数中的参数类型声明为 `Item`，所以还能获得所有属性及其类型的编辑器支持（补全等）。

		// should not happen
		t.Fatal(err)
	}
	if err := buf.UnreadByte(); err == nil {
		t.Fatal("UnreadByte: expected error, got nil")
	}
}

// verify that copying from an empty reader always has the same results,
// regardless of the presence of a WriteTo method.
func TestReaderCopyNothing(t *testing.T) {
	type nErr struct {
		n   int64
		err error
	}
	type justReader struct {
		io.Reader
	}

        ));
    })
    .build();
```

### Request Parameters

```java
SuggestResponse response = suggester.suggest()
    .setQuery("search term")
    .setSize(10)                           // max results
    .setTags(new String[]{"category"})      // filter by tags
    .setRoles(new String[]{"user"})         // filter by roles  
    .setLanguages(new String[]{"en", "ja"}) // language preference

    assertThat(eventRecorder.recordedEventTypes().filter { it == ConnectFailed::class }).hasSize(0)
  }

  @Test
  fun callIpv6WhenBothServersAreReachable() {
    // Flip DNS results to prefer IPv6.
    dnsResults =
      listOf(
        localhostIpv6,
        localhostIpv4,
      )
    serverIpv4.enqueue(
      MockResponse(body = "unexpected call to IPv4"),
    )