Tout comme pour la déclaration de paramètres de requête, quand un attribut de modèle a une valeur par défaut, il n'est pas nécessaire. Sinon, cet attribut doit être renseigné dans le corps de la requête. Pour rendre ce champ optionnel simplement, utilisez `None` comme valeur par défaut.

Par exemple, le modèle ci-dessus déclare un "objet" JSON (ou `dict` Python) tel que :

```JSON
{
    "name": "Foo",
    "description": "An optional description",

    class InterfaceImplementationTests {

        @Test
        @DisplayName("Should implement AllocInfo interface")
        void shouldImplementAllocInfo() {
            assertTrue(AllocInfo.class.isAssignableFrom(FileFsSizeInformation.class));
        }

        @Test
        @DisplayName("Should implement FileSystemInformation interface")
        void shouldImplementFileSystemInformation() {

@GwtIncompatible
@J2ObjCIncompatible
abstract class TempFileCreator {
  static final TempFileCreator INSTANCE = pickSecureCreator();

  /**
   * @throws IllegalStateException if the directory could not be created (to implement the contract
   *     of {@link Files#createTempDir()}, such as if the system does not support creating temporary
   *     directories securely
   */
  abstract File createTempDir();

		}
		return result

	case sqlFnUTCNow:
		if len(e.SFunc.ArgsList) != 0 {
			result.err = fmt.Errorf("%s() takes no arguments", string(funcName))
		}
		return result
	}

	// TODO: implement other functions
	return qProp{err: errFunctionNotImplemented}

     *
     * @param buffer buffer to release
     */
    public void releaseBuffer(ByteBuffer buffer) {
        // For direct buffers, we rely on GC
        // Could implement a more sophisticated buffer pool here
    }

    /**
     * Clean up all pooled regions
     *
     * This method should be called when shutting down to
     * release all resources.
     */

            assertEquals(32, bytesDecoded);
            assertTrue(fileFsFullSizeInfo.getCapacity() != 0);
        }

        @Test
        @DisplayName("Should implement AllocInfo interface")
        void testAllocInfoInterface() {
            assertTrue(fileFsFullSizeInfo instanceof AllocInfo);
            assertTrue(fileFsFullSizeInfo instanceof FileSystemInformation);
        }

Ainsi, vous importez `Query`, qui est une fonction. Et lorsque vous l'appelez, elle renvoie une instance d'une classe également nommée `Query`.

Ces fonctions sont là (au lieu d'utiliser simplement les classes directement) pour que votre éditeur ne marque pas d'erreurs sur leurs types.

 could encapsulate everything we need about the project in the POM including
 plugin parameters and anything else.

 We once had a document that Vincent and I agreed upon and I was about to
 implement it and then I disappeared for 8 months so it never came to pass.

 So I guess it's important to figure out what people are using properties
 files for and see if we can't incorporate it all into the POM. Or if we do

 *
 * <p>Popular escapers are defined as constants in classes like {@link
 * com.google.common.html.HtmlEscapers} and {@link com.google.common.xml.XmlEscapers}. To create
 * your own escapers extend this class and implement the {@link #escape(char)} method.
 *
 * @author Sven Mawson
 * @since 15.0
 */
@GwtCompatible
@SuppressWarnings("EscapedEntity") // We do mean for the user to see "&lt;" etc.

Framing rules make it impractical to implement http/2 correctly on a single blocking thread. The flow-control features introduce feedback between reads and writes, requiring writes to acknowledge reads and reads to throttle writes.