///

### Einen Callback-`APIRouter` erstellen { #create-a-callback-apirouter }

Erstellen Sie zunächst einen neuen `APIRouter`, der einen oder mehrere Callbacks enthält.

{* ../../docs_src/openapi_callbacks/tutorial001_py310.py hl[1,23] *}

### Die Callback-*Pfadoperation* erstellen { #create-the-callback-path-operation }

You can define this *startup* and *shutdown* logic using the `lifespan` parameter of the `FastAPI` app, and a "context manager" (I'll show you what that is in a second).

Let's start with an example and then see it in detail.

We create an async function `lifespan()` with `yield` like this:

{* ../../docs_src/events/tutorial003_py39.py hl[16,19] *}

            return updateEntity(source, result);
        } catch (InstantiationException | IllegalAccessException e) {
            final String msg = "Cannot create a new instance: " + entityType.getName();
            throw new IllegalBehaviorStateException(msg, e);
        }
    }

import org.lastaflute.web.validation.theme.conversion.ValidateTypeFailure;

import jakarta.validation.constraints.Max;
import jakarta.validation.constraints.Min;
import jakarta.validation.constraints.Size;

/**
 * The create form for Scheduler.
 *
 */
public class CreateForm {

    /**
     * Creates a new CreateForm instance.
     */
    public CreateForm() {
    }

    /**
     * The CRUD mode for the form.

    /**
     * Get supported RDMA capabilities
     *
     * @return set of capabilities supported by this provider
     */
    Set<RdmaCapability> getSupportedCapabilities();

    /**
     * Create RDMA connection to remote endpoint
     *
     * @param remote remote socket address
     * @param local local socket address, may be null for auto-binding
     * @return new RDMA connection instance

		<i class="fa fa-arrow-circle-left" aria-hidden="true"></i>
		<la:message key="labels.crud_button_back" />
	</button>
	<c:if test="${editable}">
	<button type="submit" class="btn btn-success" name="create"
		value="<la:message key="labels.crud_button_create" />">
		<i class="fa fa-plus" aria-hidden="true"></i>
		<la:message key="labels.crud_button_create" />
	</button>
	</c:if>
</c:if>
<c:if test="${crudMode == 2}">

    return Multisets.immutableEntry(element, count);
  }

  private static <E extends @Nullable Object> Entry<E> control(E element, int count) {
    return HashMultiset.create(nCopies(count, element)).entrySet().iterator().next();
  }

  public void testToString() {
    assertEquals("foo", entry("foo", 1).toString());
    assertEquals("bar x 2", entry("bar", 2).toString());
  }

  public SubMapMultimapAsMapImplementsMapTest() {
    super(true, true, true);
  }

  private TreeMultimap<String, Integer> createMultimap() {
    TreeMultimap<String, Integer> multimap =
        TreeMultimap.create(
            Ordering.<String>natural().nullsFirst(), Ordering.<Integer>natural().nullsFirst());
    multimap.put("a", -1);
    multimap.put("a", -3);
    multimap.put("z", -2);
    return multimap;
  }

 * instances ORed together.
 *
 */
public class CumulativeScopeArtifactFilter extends AbstractScopeArtifactFilter {

    private Set<String> scopes;

    /**
     * Create a new filter with the specified scopes and their implied scopes enabled.
     *
     * @param scopes The scopes to enable, along with all implied scopes, may be {@code null}.
     */

     *
     * @param body duplicate host setting data to create
     * @return JSON response with created setting ID and status
     */
    @Execute
    public JsonResponse<ApiResult> post$setting(final CreateBody body) {
        validateApi(body, messages -> {});
        body.crudMode = CrudMode.CREATE;
        final DuplicateHost duplicateHost = getDuplicateHost(body).map(entity -> {