if err != nil {
		t.Fatal(err)
	}
	defer obj.Shutdown(t.Context())

	// initialize the server and obtain the credentials and root.
	// credentials are necessary to sign the HTTP request.
	if err = newTestConfig(globalMinioDefaultRegion, obj); err != nil {
		t.Fatalf("Unable to initialize server config. %s", err)
	}

	defer removeRoots(fsDirs)

	z := obj.(*erasureServerPools)

                /*
                 * When DFS is in action all request paths are
                 * full UNC paths minus the first backslash like
                 * \server\share\path\to\file
                 * as opposed to normally
                 * \path\to\file
                 */
                if (preq.getPath() != null && preq.getPath().length() > 0) {

As in this case (without using `Annotated`) we have to replace the default value `None` in the function with `Query()`, we now need to set the default value with the parameter `Query(default=None)`, it serves the same purpose of defining that default value (at least for FastAPI).

So:

```Python
q: str | None = Query(default=None)
```

FastAPI will use this return type to:

* **Validate** the returned data.
    * If the data is invalid (e.g. you are missing a field), it means that *your* app code is broken, not returning what it should, and it will return a server error instead of returning incorrect data. This way you and your clients can be certain that they will receive the data and the data shape expected.
* Add a **JSON Schema** for the response, in the OpenAPI *path operation*.

* PostgreSQL
* MySQL
* SQLite
* Oracle
* Microsoft SQL Server, etc.

Neste exemplo, usaremos **SQLite**, porque ele usa um único arquivo e o Python tem suporte integrado. Assim, você pode copiar este exemplo e executá-lo como está.

		}
		if !vcfg.Enabled() {
			return BucketRemoteTargetNotVersioned{Bucket: tgt.TargetBucket}
		}
	}

	// Check if target is a MinIO server and alive
	hcCtx, cancel := context.WithTimeout(ctx, 3*time.Second)
	scheme := "http"
	if tgt.Secure {
		scheme = "https"
	}
	result := <-sys.hcClient.Alive(hcCtx, madmin.AliveOpts{}, madmin.ServerProperties{

{* ../../docs_src/query_params_str_validations/tutorial002.py hl[9] *}

Note que substituímos o valor padrão de `None` para `Query(default=None)`, o primeiro parâmetro de `Query` serve para o mesmo propósito: definir o valor padrão do parâmetro.

Então:

```Python
q: Union[str, None] = Query(default=None)
```

...Torna o parâmetro opcional, da mesma maneira que:

```Python

                        break;
                    }
                    /* Message was sent to WINS but
                     * failed to receive response.
                     * Try a different WINS server.
                     */
                    if (request.addr == NbtAddress.getWINSAddress()) {
                        NbtAddress.switchWINS();
                    }

```

## Supported Protocols and Formats

### Protocols
- **HTTP/HTTPS**: Full web crawling support with cookies, authentication, redirects
- **File System**: Local and network file system access
- **FTP**: FTP server crawling with authentication
- **SMB/CIFS**: Windows network shares
- **Storage**: Cloud storage systems (MinIO, S3-compatible)

### Content Formats

#### Office Documents

    data.write("8180".decodeHex())
    assertFailsWith<ProtocolException> {
      clientReader.processNextFrame()
    }.also { expected ->
      assertThat(expected.message)
        .isEqualTo("Server-sent frames must not be masked.")
    }
  }

  @Test fun controlFramePayloadMax() {
    data.write("8a7e007e".decodeHex())
    assertFailsWith<ProtocolException> {
      clientReader.processNextFrame()