```JSON
{
    "name": "Foo",
    "price": 45.2
}
```

## Déclarez-le comme paramètre

Pour l'ajouter à votre *opération de chemin*, déclarez-le comme vous déclareriez des paramètres de chemin ou de requête :

```Python hl_lines="18"
{!../../../docs_src/body/tutorial001.py!}
```

...et déclarez que son type est le modèle que vous avez créé : `Item`.

## Résultats

        exception.message.contains("The service '${BuildTreeScopedService.name}' declares service scope 'BuildTree' but is registered in the 'Build' scope. Either update the '@ServiceScope()' annotation on '${BuildTreeScopedService.simpleName}' to include the 'Build' scope or move the service registration to one of the declared scopes.")

        where:
        method     | registration

```JSON
{
    "name": "Foo",
    "price": 45.2
}
```

## Declare it as a parameter

To add it to your *path operation*, declare it the same way you declared path and query parameters:

=== "Python 3.10+"

    ```Python hl_lines="16"
    {!> ../../../docs_src/body/tutorial001_py310.py!}
    ```

=== "Python 3.8+"

    {!> ../../../docs_src/dependencies/tutorial005.py!}
    ```

Let's focus on the parameters declared:

* Even though this function is a dependency ("dependable") itself, it also declares another dependency (it "depends" on something else).
    * It depends on the `query_extractor`, and assigns the value returned by it to the parameter `q`.
* It also declares an optional `last_query` cookie, as a `str`.

        return String.format(
            "The service '%s' declares %s but is registered in the '%s' scope. " +
                "Either update the '@ServiceScope()' annotation on '%s' to include the '%s' scope " +
                "or move the service registration to one of the declared scopes.",
            serviceType.getName(),
            displayScopes(actualScopes),

== Undefined version reference

This error indicates that your catalog declares a library which references a non-existing version.
When you use version references in a catalog, the version reference must point to an existing version alias.

To fix this, you must either:

- fix the version reference to use one of the versions declared in the catalog
- or declare a new version corresponding to the reference you want to use in the catalog

```

## Réponses supplémentaires

Vous avez probablement vu comment déclarer le `response_model` et le `status_code` pour une *opération de chemin*.

Cela définit les métadonnées sur la réponse principale d'une *opération de chemin*.

Vous pouvez également déclarer des réponses supplémentaires avec leurs modèles, codes de statut, etc.

[[sec:custom_classpath]]
== Adding external dependencies

Init scripts can also declare dependencies with the `initscript()` method, passing in a closure that declares the init script classpath.

Declaring external dependencies for an init script:

====
include::sample[dir="snippets/initScripts/externalDependency/kotlin",files="init.gradle.kts[tags=declare-classpath]"]

     * Dependencies declared on this configuration are present during compilation
     * and runtime, and are exposed as part of the feature's API variant.
     *
     * @return null if {@link #withApi()} has not been called.
     */
    @Nullable
    Configuration getApiConfiguration();

    /**
     * Gets the dependency configuration for which to declare compile-only API dependencies.

}

// OptionalVariableDeclarations declares which optional CEL variables
// are declared for an expression.
type OptionalVariableDeclarations struct {
	// HasParams specifies if the "params" variable is declared.
	// The "params" variable may still be bound to "null" when declared.
	HasParams bool
	// HasAuthorizer specifies if the "authorizer" and "authorizer.requestResource"
	// variables are declared. When declared, the authorizer variables are