</default>
  </defaults>
  <classes>
    <class rootElement="true" xml.tagName="metadata" java.clone="deep">
      <name>Metadata</name>
      <version>1.0.0+</version>
      <fields>
        <field xml.attribute="true" xml.tagName="modelVersion">
          <name>modelVersion</name>
          <version>1.1.0+</version>
          <type>String</type>
          <description>The version of the underlying metadata model.</description>

We could create an instance of this class with:

{* ../../docs_src/dependencies/tutorial011_an_py39.py hl[18] *}

And that way we are able to "parameterize" our dependency, that now has `"bar"` inside of it, as the attribute `checker.fixed_content`.

## Use the instance as a dependency { #use-the-instance-as-a-dependency }

#### Data "schema" { #data-schema }

The term "schema" might also refer to the shape of some data, like a JSON content.

In that case, it would mean the JSON attributes, and data types they have, etc.

#### OpenAPI and JSON Schema { #openapi-and-json-schema }

    // ===================================================================================
    //                                                                           Attribute
    //                                                                           =========
    @Resource
    private KuromojiService kuromojiService;
    @Resource
    private KuromojiPager kuromojiPager;

    propertyName: str
    mapping: Optional[dict[str, str]] = None


class XML(BaseModelWithConfig):
    name: Optional[str] = None
    namespace: Optional[str] = None
    prefix: Optional[str] = None
    attribute: Optional[bool] = None
    wrapped: Optional[bool] = None


class ExternalDocumentation(BaseModelWithConfig):
    description: Optional[str] = None
    url: AnyUrl

    // ===================================================================================
    //                                                                           Attribute
    //                                                                           =========
    /** Service for file authentication operations. */
    @Resource
    private FileAuthenticationService fileAuthenticationService;

    // ===================================================================================
    //                                                                           Attribute
    //                                                                           =========
    @Resource
    private RequestHeaderService requestHeaderService;
    @Resource
    private ReqHeaderPager reqHeaderPager;

<a href="https://docs.pydantic.dev/" class="external-link" target="_blank">Pydantic</a> est une bibliothèque Python pour effectuer de la validation de données.

Vous déclarez la forme de la donnée avec des classes et des attributs.

Chaque attribut possède un type.

		// GetObjectAttributes
		router.Methods(http.MethodGet).Path("/{object:.+}").
			HandlerFunc(s3APIMiddleware(api.GetObjectAttributesHandler, traceHdrsS3HFlag)).
			Queries("attributes", "")

		// CopyObjectPart
		router.Methods(http.MethodPut).Path("/{object:.+}").
			HeadersRegexp(xhttp.AmzCopySource, ".*?(\\/|%2F).*?").
			HandlerFunc(s3APIMiddleware(api.CopyObjectPartHandler)).

    /** Property key for SMB1 file creation time. */
    public static final String SMB_CREATE_TIME = "smb1CreateTime";

    /** Property key for SMB1 owner attributes. */
    public static final String SMB_OWNER_ATTRIBUTES = "smb1OwnerAttributes";

    static {
        if (Config.getInt("jcifs.smb1.util.loglevel", -1) == -1) {
            if (logger.isTraceEnabled()) {