String[] tests = {
      "0",
      "ffffffffffffffff",
      "7fffffffffffffff",
      "ff1a618b7f65ea12",
      "5a4316b8c153ac4d",
      "6cf78a4b139a4e2a"
    };
    int[] bases = {2, 5, 7, 8, 10, 16};
    for (int base : bases) {
      for (String x : tests) {
        BigInteger xValue = new BigInteger(x, 16);
        long xLong = xValue.longValue(); // signed

			err = msgp.WrapError(err)
			return
		}
		switch msgp.UnsafeString(field) {
		case "Curr":
			z.Curr, err = dc.ReadInt()
			if err != nil {
				err = msgp.WrapError(err, "Curr")
				return
			}
		case "Avg":
			z.Avg, err = dc.ReadFloat32()
			if err != nil {
				err = msgp.WrapError(err, "Avg")
				return
			}
		case "Max":
			z.Max, err = dc.ReadInt()
			if err != nil {
				err = msgp.WrapError(err, "Max")

    public void setEventType(final int eventType) {
        switch (eventType) {
            case TRANSFER_INITIATED:
                break;
            case TRANSFER_STARTED:
                break;
            case TRANSFER_COMPLETED:
                break;
            case TRANSFER_PROGRESS:
                break;
            case TRANSFER_ERROR:
                break;
            default:

                    switch (behavior) {
                      case 0:
                        map.incrementAndGet(key);
                        threadSum++;
                        break;
                      case 1:
                        map.decrementAndGet(key);
                        threadSum--;
                        break;
                      case 2:
                        map.addAndGet(key, delta);

                    return (int) misses.incrementAndGet();
                  }
                });

    // To start, fill up the cache.
    // Each miss both increments the counter and causes the map to grow by one,
    // so until evictions begin, the size of the map is the greatest return
    // value seen so far
    while (cache.getUnchecked(nextRandomKey()) < maximumSize) {}

    requests.set(0);

			err = msgp.WrapError(err)
			return
		}
		switch msgp.UnsafeString(field) {
		case "Bucket":
			z.Bucket, err = dc.ReadString()
			if err != nil {
				err = msgp.WrapError(err, "Bucket")
				return
			}
		case "Object":
			z.Object, err = dc.ReadString()
			if err != nil {
				err = msgp.WrapError(err, "Object")
				return
			}
		case "VersionID":
			z.VersionID, err = dc.ReadString()
			if err != nil {

```Python
say_hi(name=None)  # Esto funciona, None es válido 🎉
```

La buena noticia es que, en la mayoría de los casos, podrás simplemente usar `|` para definir uniones de tipos:

```python
def say_hi(name: str | None):
    print(f"Hey {name}!")
```

		}
		switch msgp.UnsafeString(field) {
		case "Type":
			{
				var zb0002 string
				zb0002, err = dc.ReadString()
				if err != nil {
					err = msgp.WrapError(err, "Type")
					return
				}
				z.Type = BatchKeyRotationType(zb0002)
			}
		case "Key":
			z.Key, err = dc.ReadString()
			if err != nil {
				err = msgp.WrapError(err, "Key")
				return
			}
		case "Context":
			z.Context, err = dc.ReadString()

Voici quelques types de données supplémentaires que vous pouvez utiliser :

* `UUID` :
    * Un « identifiant universel unique » standard, couramment utilisé comme ID dans de nombreuses bases de données et systèmes.
    * Dans les requêtes et les réponses, il sera représenté sous forme de `str`.
* `datetime.datetime` :
    * Un `datetime.datetime` Python.

<img src="/img/tutorial/extending-openapi/image04.png">

## Alterar parâmetros de UI padrão do Swagger { #change-default-swagger-ui-parameters }

O FastAPI inclui alguns parâmetros de configuração padrão apropriados para a maioria dos casos de uso.

Inclui estas configurações padrão:

{* ../../fastapi/openapi/docs.py ln[9:24] hl[18:24] *}

Você pode substituir qualquer um deles definindo um valor diferente no argumento `swagger_ui_parameters`.