### Top-level application { #top-level-application }

First, create the main, top-level, **FastAPI** application, and its *path operations*:

{* ../../docs_src/sub_applications/tutorial001.py hl[3, 6:8] *}

### Sub-application { #sub-application }

Then, create your sub-application, and its *path operations*.

This sub-application is just another standard FastAPI application, but this is the one that will be "mounted":

///

## Una aplicación con webhooks

Cuando creas una aplicación de **FastAPI**, hay un atributo `webhooks` que puedes usar para definir *webhooks*, de la misma manera que definirías *path operations*, por ejemplo con `@app.webhooks.post()`.

{* ../../docs_src/openapi_webhooks/tutorial001.py hl[9:13,36:53] *}

Los webhooks que defines terminarán en el esquema de **OpenAPI** y en la interfaz automática de **documentación**.

	github.com/AzureAD/microsoft-authentication-library-for-go v1.4.2 // indirect
	github.com/GoogleCloudPlatform/opentelemetry-operations-go/detectors/gcp v1.27.0 // indirect
	github.com/GoogleCloudPlatform/opentelemetry-operations-go/exporter/metric v0.51.0 // indirect
	github.com/GoogleCloudPlatform/opentelemetry-operations-go/internal/resourcemapping v0.51.0 // indirect
	github.com/VividCortex/ewma v1.2.0 // indirect

///

{* ../../docs_src/security/tutorial005_an_py310.py hl[156] *}

## Declarar scopes en *path operations* y dependencias

Ahora declaramos que la *path operation* para `/users/me/items/` requiere el scope `items`.

Para esto, importamos y usamos `Security` de `fastapi`.

 */
package org.codelibs.fess.app.web.api.admin.dict.kuromoji;

import org.codelibs.fess.app.web.admin.dict.kuromoji.DownloadForm;

/**
 * Download body for Kuromoji dictionary API operations.
 * This class extends the DownloadForm to provide request body handling
 * for downloading Kuromoji dictionaries via REST API.
 *
 */
public class DownloadBody extends DownloadForm {

    /**

 */
package org.codelibs.fess.app.web.api.admin.dict.protwords;

import org.codelibs.fess.app.web.admin.dict.protwords.DownloadForm;

/**
 * Download body for protected words dictionary API operations.
 * This class extends the DownloadForm to provide request body handling
 * for downloading protected words dictionaries via REST API.
 *
 */
public class DownloadBody extends DownloadForm {

    /**

 */
package org.codelibs.fess.app.web.api.admin.dict.stopwords;

import org.codelibs.fess.app.web.admin.dict.stopwords.DownloadForm;

/**
 * Download body for stop words dictionary API operations.
 * This class extends the DownloadForm to provide request body handling
 * for downloading stop words dictionaries via REST API.
 *
 */
public class DownloadBody extends DownloadForm {

    /**

/**
 * Abstract base class for admin API actions in Fess.
 * This class extends FessApiAction to provide admin-specific functionality
 * including enhanced access control for administrative operations.
 *
 * <p>Admin API actions require special permissions and access tokens
 * that are validated against the admin role configuration.</p>
 */
public abstract class FessApiAdminAction extends FessApiAction {

import com.google.common.collect.testing.Helpers;
import com.google.common.collect.testing.features.CollectionFeature;
import org.junit.Ignore;

/**
 * A generic JUnit test which tests {@code stream} operations on a collection. Can't be invoked
 * directly; please see {@link com.google.common.collect.testing.CollectionTestSuiteBuilder}.
 *
 * @author Louis Wasserman
 */
@GwtCompatible

import com.google.common.collect.testing.features.CollectionFeature;
import com.google.common.collect.testing.features.CollectionSize;
import org.junit.Ignore;

/**
 * A generic JUnit test which tests {@code indexOf()} operations on a list. Can't be invoked
 * directly; please see {@link com.google.common.collect.testing.ListTestSuiteBuilder}.
 *
 * @author Chris Povirk
 */
@GwtCompatible