#### "Schéma" d'API

Ici, <a href="https://github.com/OAI/OpenAPI-Specification" class="external-link" target="_blank">OpenAPI</a> est une spécification qui dicte comment définir le schéma de votre API.

Le schéma inclut les chemins de votre API, les paramètres potentiels de chaque chemin, etc.

#### "Schéma" de données

{* ../../docs_src/query_params_str_validations/tutorial002.py hl[9] *}

Comme nous devons remplacer la valeur par défaut `None` dans la fonction par `Query()`, nous pouvons maintenant définir la valeur par défaut avec le paramètre `Query(default=None)`, il sert le même objectif qui est de définir cette valeur par défaut.

Donc :

```Python
q: Union[str, None] = Query(default=None)
```

... rend le paramètre optionnel, et est donc équivalent à :

            "type" : "integer"
          },
          "queryPageSize" : {
            "type" : "integer"
          },
          "queryTime" : {
            "type" : "long"
          },
          "referer" : {
            "type" : "keyword"
          },
          "requestedAt" : {
            "type" : "date",
            "format" : "date_optional_time"
          },
          "responseTime" : {

        } catch (Exception e) {
            fail("Should have caught ServletRuntimeException");
        }
    }

    public void test_serialization() {
        // Test that the serialVersionUID is properly defined
        // This test verifies that the class can be instantiated and has the serial version UID
        ServletException servletException = new ServletException("Serialization test");

 */

package jcifs.dcerpc.ndr;

/**
 * Base class for NDR (Network Data Representation) objects used in DCE/RPC communication.
 * This abstract class defines the interface for encoding and decoding NDR data types.
 */
public abstract class NdrObject {

    /**
     * Default constructor for NDR object
     */
    public NdrObject() {
        // Default constructor

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
package jcifs.internal.witness;

/**
 * Represents a witness unregistration response as defined in MS-SWN specification.
 * Contains the result of a witness unregistration request.
 */
public class WitnessUnregisterResponse {
    /**
     * Creates a new witness unregister response.
     */

 */

package jcifs.smb1.dcerpc.ndr;

/**
 * Base class for NDR (Network Data Representation) objects used in DCE/RPC communication.
 * This abstract class defines the interface for encoding and decoding NDR data types.
 */
public abstract class NdrObject {

    /**
     * Default constructor for NDR object
     */
    public NdrObject() {
        // Default constructor

    public void setReferer_Terms(ConditionOptionCall<TermsAggregationBuilder> opLambda) {
        setReferer_Terms("referer", opLambda, null);
    }

    public void setReferer_Terms(ConditionOptionCall<TermsAggregationBuilder> opLambda, OperatorCall<BsSearchLogCA> aggsLambda) {
        setReferer_Terms("referer", opLambda, aggsLambda);
    }

...e então o Swagger UI não mostrará mais o destaque de sintaxe:

<img src="/img/tutorial/extending-openapi/image03.png">

## Alterar o tema

Da mesma forma que você pode definir o tema de destaque de sintaxe com a chave `"syntaxHighlight.theme"` (observe que há um ponto no meio):

{* ../../docs_src/configure_swagger_ui/tutorial002.py hl[3] *}

# Define this here and not in the main mkdocs.yml file because that one is auto
# updated and written, and the script would remove the env var
INHERIT: !ENV [INSIDERS_FILE, '../en/mkdocs.no-insiders.yml']
markdown_extensions:
  pymdownx.highlight: