* @param seed the seed value for popular word generation
     * @param tags array of tags to filter results
     * @param roles array of roles to filter results
     * @param fields array of fields to search in
     * @param excludes array of words to exclude from results
     * @return list of popular words matching the criteria
     */

    /**
     * Performs search for duplicate hosts based on form criteria.
     *
     * @param form the search form containing search criteria
     * @return HTML response for the duplicate host list page with search results
     */
    @Execute
    @Secured({ ROLE, ROLE + VIEW })
    public HtmlResponse search(final SearchForm form) {
        copyBeanToBean(form, duplicateHostPager, 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

            searchPaging(data, form);
        });
    }

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

 * #entries()}, and {@link #asMap()} return collections that are views of the multimap. If the
 * multimap is modified while an iteration over any of those collections is in progress, except
 * through the iterator's methods, the results of the iteration are undefined.
 *
 * <p>Keys and values may be null. All optional multimap methods are supported, and all returned
 * views are modifiable.
 *

        return this.fileLocator.getParent();
    }

    /**
     * Returns the full uncanonicalized URL of this SMB resource. An
     * <code>SmbFile</code> constructed with the result of this method will
     * result in an <code>SmbFile</code> that is equal to the original.
     *
     * @return The uncanonicalized full URL of this SMB resource.
     */

    public String getPath() {

        assertNotNull(result);
        assertTrue(result.isPresent());
        assertEquals(Integer.valueOf(42), result.get());
    }

    @Test
    public void test_ofNullable_withNullInteger() {
        Integer testValue = null;
        OptionalEntity<Integer> result = OptionalUtil.ofNullable(testValue);

        assertNotNull(result);
        assertFalse(result.isPresent());

    }

    /**
     * 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));