# Modelos de Parâmetros do Cabeçalho

Se você possui um grupo de **parâmetros de cabeçalho** relacionados, você pode criar um **modelo do Pydantic** para declará-los.

Isso vai lhe permitir **reusar o modelo** em **múltiplos lugares** e também declarar validações e metadadados para todos os parâmetros de uma vez. 😎

/// note | Nota

Isso é possível desde a versão `0.115.0` do FastAPI. 🤓

///

## Parâmetros do Cabeçalho com um Modelo Pydantic

   *
   * So we use uncheckedCastNullableTToT here. This is a weird usage of that method: The method is
   * documented as being for use with type parameters that have parametric nullness. But Converter's
   * type parameters do not. Still, we use it here so that we can suppress a warning at a smaller
   * level than the whole method but without performing a runtime null check. That way, we can still

Refer the [Values file](./values.yaml) for all the possible config fields. You can specify each parameter using the `--set key=value[,key=value]` argument to `helm install`. For example, ```bash helm install --name my-release --set persistence.size=1Ti minio/minio ``` The above command deploys MinIO server with a 1Ti backing persistent volume. Alternately, you can provide a YAML file that specifies parameter values while installing the chart. For example, ```bash helm install --name my-release -f values.yaml...

Refer the [Values file](./values.yaml) for all the possible config fields. You can specify each parameter using the `--set key=value[,key=value]` argument to `helm install`. For example, ```bash helm install --name my-release --set persistence.size=1Ti minio/minio ``` The above command deploys MinIO server with a 1Ti backing persistent volume. Alternately, you can provide a YAML file that specifies parameter values while installing the chart. For example, ```bash helm install --name my-release -f values.yaml...

 * limitations under the License.
 */

package com.google.common.collect;

import java.util.Set;

/**
 * GWT emulation of {@link ImmutableEnumSet}. The type parameter is not bounded by {@code Enum<E>}
 * to avoid code-size bloat.
 *
 * @author Hayward Chan
 */
@ElementTypesAreNonnullByDefault
final class ImmutableEnumSet<E> extends ForwardingImmutableSet<E> {

/**
 * An interface for representing and manipulating an origin node's adjacent nodes and incident edges
 * in a {@link Network}.
 *
 * @author James Sexton
 * @param <N> Node parameter type
 * @param <E> Edge parameter type
 */
@ElementTypesAreNonnullByDefault
interface NetworkConnections<N, E> {

  Set<N> adjacentNodes();

  Set<N> predecessors();

  Set<N> successors();

            "/users/": {
                "get": {
                    "tags": ["users"],
                    "summary": "Read Users",
                    "operationId": "read_users_users__get",
                    "parameters": [
                        {
                            "required": True,
                            "schema": {"title": "Token", "type": "string"},
                            "name": "token",

{!> ../../docs_src/body_nested_models/tutorial002.py!}
```

### Declare a `list` with a type parameter

To declare types that have type parameters (internal types), like `list`, `dict`, `tuple`:

* If you are in a Python version lower than 3.9, import their equivalent version from the `typing` module
* Pass the internal type(s) as "type parameters" using square brackets: `[` and `]`

In Python 3.9 it would be:

```Python

                    * Nenhum escopo necessário.
                    * Uma dependência utilizando `oauth2_scheme`.
                    * Um parâmetro `security_scopes` do tipo `SecurityScopes`:
                        * Este parâmetro `security_scopes` possui uma propriedade `scopes` com uma `list` contendo todos estes escopos declarados acima, então:

```console
$ pip install jinja2

---> 100%
```

</div>

## Using `Jinja2Templates`

* Import `Jinja2Templates`.
* Create a `templates` object that you can reuse later.
* Declare a `Request` parameter in the *path operation* that will return a template.