* For `PUT` requests to `/items/{item_id}`, read the body as JSON:
    * Check that it has a required attribute `name` that should be a `str`.
    * Check that it has a required attribute `price` that has to be a `float`.
    * Check that it has an optional attribute `is_offer`, that should be a `bool`, if present.
    * All this would also work for deeply nested JSON objects.

    // ===================================================================================
    //                                                                           Attribute
    //                                                                           =========
    protected List<QueryBuilder> queryBuilderList;
    protected List<FieldSortBuilder> fieldSortBuilderList;

    // ===================================================================================
    //                                                                           Attribute
    //                                                                           =========
    @Resource
    private DataConfigService dataConfigService;
    @Resource
    private DataConfigPager dataConfigPager;

    // ===================================================================================
    //                                                                           Attribute
    //                                                                           =========
    @Resource
    private StopwordsService stopwordsService;
    @Resource
    private StopwordsPager stopwordsPager;

        super();
    }

    // ===================================================================================
    //                                                                           Attribute
    //                                                                           =========
    @Resource
    private PathMappingService pathMappingService;
    @Resource
    private PathMapPager pathMapPager;

        super();
    }

    // ===================================================================================
    //                                                                           Attribute
    //                                                                           =========

    /** Service for managing group configurations */
    @Resource
    private GroupService groupService;

    // ===================================================================================
    //                                                                           Attribute
    //                                                                           =========
    @Resource
    private BoostDocumentRuleService boostDocumentRuleService;

```Python
{
    "name": "Barz",
    "price": 3,
    "description": None,
}
```

because it doesn't include the already stored attribute `"tax": 20.2`, the input model would take the default value of `"tax": 10.5`.

And the data would be saved with that "new" `tax` of `10.5`.

## Partial updates with `PATCH` { #partial-updates-with-patch }

                Arguments.of(FILE_NOTIFY_CHANGE_DIR_NAME, "Directory name changes"),
                Arguments.of(FILE_NOTIFY_CHANGE_ATTRIBUTES, "Attribute changes"), Arguments.of(FILE_NOTIFY_CHANGE_SIZE, "Size changes"),
                Arguments.of(FILE_NOTIFY_CHANGE_LAST_WRITE, "Last write time changes"),
                Arguments.of(FILE_NOTIFY_CHANGE_SECURITY, "Security changes"),

// needs to be updated with the argument length of the input list.
// Returns nullptr if there is any problem like op_name is not found, or the
// argument does not support this attribute type.
TF_CAPI_EXPORT extern const char* TF_GetNumberAttrForOpListInput(
    const char* op_name, int input_index, TF_Status* status);

// Returns 1 if the op is stateful, 0 otherwise. The return value is undefined