import java.util.Map;

/**
 * Interface for script engines that can evaluate templates with parameters.
 * This interface provides a contract for different script engine implementations
 * to process template strings with parameter substitution.
 */
public interface ScriptEngine {

    /**
     * Evaluates a template string with the provided parameter map.
     * The template is processed using the script engine's templating mechanism,

        df.setRoundingMode(RoundingMode.HALF_UP);
        return df.format(target) + unit;
    }

    /**
     * Generates URL query parameters for pagination, excluding the specified query parameter.
     *
     * @param query the query parameter to exclude from paging
     * @return URL-encoded query string for pagination
     */
    public static String pagingQuery(final String query) {

### Usa el parámetro `response_model_exclude_unset` { #use-the-response-model-exclude-unset-parameter }

Puedes configurar el parámetro del decorador de path operation `response_model_exclude_unset=True`:

{* ../../docs_src/response_model/tutorial004_py310.py hl[22] *}

Isso não vai dentro de cada JSON Schema contido no OpenAPI, vai fora, diretamente na *operação de rota*.

### Usando o parâmetro `openapi_examples` { #using-the-openapi-examples-parameter }

Você pode declarar o `examples` específico do OpenAPI no FastAPI com o parâmetro `openapi_examples` para:

* `Path()`
* `Query()`
* `Header()`
* `Cookie()`
* `Body()`
* `Form()`
* `File()`

Esto no va dentro de cada JSON Schema contenido en OpenAPI, esto va afuera, directamente en la *path operation*.

### Usando el Parámetro `openapi_examples` { #using-the-openapi-examples-parameter }

Puedes declarar los `examples` específicos de OpenAPI en FastAPI con el parámetro `openapi_examples` para:

* `Path()`
* `Query()`
* `Header()`
* `Cookie()`
* `Body()`
* `Form()`
* `File()`

### Den `response_model_exclude_unset`-Parameter verwenden { #use-the-response-model-exclude-unset-parameter }

Sie können den *Pfadoperation-Dekorator*-Parameter `response_model_exclude_unset=True` setzen:

{* ../../docs_src/response_model/tutorial004_py310.py hl[22] *}

## Using `BackgroundTasks` { #using-backgroundtasks }

First, import `BackgroundTasks` and define a parameter in your *path operation function* with a type declaration of `BackgroundTasks`:

{* ../../docs_src/background_tasks/tutorial001_py39.py hl[1,13] *}

**FastAPI** will create the object of type `BackgroundTasks` for you and pass it as that parameter.

## Create a task function { #create-a-task-function }

/// info | Info

`Form` ist eine Klasse, die direkt von `Body` erbt.

///

/// tip | Tipp

Um Formularbodys zu deklarieren, verwenden Sie explizit `Form`, da diese Parameter sonst als Query-Parameter oder Body (JSON)-Parameter interpretiert werden würden.

///

## Über „Formularfelder“ { #about-form-fields }

# Response-Header { #response-headers }

## Einen `Response`-Parameter verwenden { #use-a-response-parameter }

Sie können einen Parameter vom Typ `Response` in Ihrer *Pfadoperation-Funktion* deklarieren (wie Sie es auch für Cookies tun können).

Und dann können Sie Header in diesem *vorübergehenden* <abbr title="Response – Antwort: Daten, die der Server zum anfragenden Client zurücksendet">Response</abbr>-Objekt festlegen.

        default:
            return "Unknown error: 0x" + Integer.toHexString(returnCode);
        }
    }

    /**
     * Encodes the witness RPC message parameters to NDR format.
     * Subclasses must implement this method to encode their specific parameters.
     *
     * @param buf the NDR buffer to encode into
     * @throws NdrException if encoding fails
     */