// ===================================================================================
    //                                                                           Attribute
    //                                                                           =========
    protected List<AbstractAggregationBuilder<?>> aggregationAggregationBuilderList;

    // ===================================================================================
    //                                                                           Attribute
    //                                                                           =========
    /** accessType */
    protected String accessType;

    /** clientIp */
    protected String clientIp;

For example, you can create a `PNGStreamingResponse` that sets the `Content-Type` header to `image/png` using the `media_type` attribute:

{* ../../docs_src/stream_data/tutorial002_py310.py ln[6,19:20] hl[20] *}

Then you can use this new class in `response_class=PNGStreamingResponse` in your *path operation function*:

* 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
    //                                                                           =========
    /** Helper for key match operations. */
    @Resource
    private KeyMatchHelper keyMatchHelper;

        for (MavenProject p : projectsInRequestScope) {
            if ("bom".equals(p.getPackaging())) {
                LOGGER.info(
                        "The packaging attribute of the '{}' project is configured as 'bom' and changed to 'pom'",
                        p.getName());
                p.setPackaging("pom");
            }
        }
    }

Indem Sie von `str` erben, weiß die API-Dokumentation, dass die Werte vom Typ `str` sein müssen, und wird in der Lage sein, korrekt zu rendern.

Erstellen Sie dann Klassen-Attribute mit festgelegten Werten, welches die erlaubten Werte sein werden:

{* ../../docs_src/path_params/tutorial005_py310.py hl[1,6:9] *}

/// tip | Tipp

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

        super();
    }

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

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

import java.nio.file.Path;
import java.nio.file.SecureDirectoryStream;
import java.nio.file.StandardOpenOption;
import java.nio.file.attribute.BasicFileAttributeView;
import java.nio.file.attribute.BasicFileAttributes;
import java.nio.file.attribute.FileAttribute;
import java.nio.file.attribute.FileTime;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.stream.Stream;