# Corpo - Campos

Da mesma forma que você pode declarar validações adicionais e metadados nos parâmetros de *funções de operações de rota* com `Query`, `Path` e `Body`, você pode declarar validações e metadados dentro de modelos do Pydantic usando `Field` do Pydantic.

## Importe `Field`

Primeiro, você tem que importá-lo:

```Python hl_lines="4"
{!../../docs_src/body_fields/tutorial001.py!}
```

/// warning | "Aviso"

                // We rely on the fact that root is configured first
                "BuildEnvironmentService should be registered by the root"
            }
            parameters.rootProjectDir = this@with
            parameters.rootProjectBuildDir = project.layout.buildDirectory
        }
        val buildEnvironmentExtension = extensions.create("buildEnvironment", BuildEnvironmentExtension::class)

    }

    private void validateParameters() {
        if (min < 0) {
            throw new IllegalArgumentException("The min parameter cannot be negative.");
        }
        if (max < 0) {
            throw new IllegalArgumentException("The max parameter cannot be negative.");
        }
        if (max < min) {
            throw new IllegalArgumentException("The length cannot be negative.");
        }
    }

    /**
     * Authenticate arbitrary credentials represented by the
     * <tt>NtlmPasswordAuthentication</tt> object against the domain controller
     * specified by the <tt>UniAddress</tt> parameter. If the credentials are
     * not accepted, an <tt>SmbAuthException</tt> will be thrown. If an error
     * occurs an <tt>SmbException</tt> will be thrown. If the credentials are

 *
 * <p>The methods implemented in this class should not be overridden unless the subclass admits a
 * more efficient implementation.
 *
 * @author James Sexton
 * @param <N> Node parameter type
 * @param <V> Value parameter type
 * @since 20.0
 */
@Beta
@ElementTypesAreNonnullByDefault
public abstract class AbstractValueGraph<N, V> extends AbstractBaseGraph<N>
    implements ValueGraph<N, V> {

  @Override

            data = websocket.receive_text()
            assert data == "Session cookie or query token value is: some-token"
            data = websocket.receive_text()
            assert data == "Query parameter q is: 3"
            data = websocket.receive_text()
            assert data == f"Message text was: {message}, for item ID: 2"
            message = "Message two"
            websocket.send_text(message)

 * properties will then populate the <code>Config</code> as well potentially
 * overwriting properties from the file. Thus properties provided on the
 * commandline with the <code>-Dproperty.name=value</code> VM parameter
 * will override properties from the configuration file.
 * <p>
 * There are several ways to set jCIFS properties. See
 * the <a href="../overview-summary.html#scp">overview page of the API
 * documentation</a> for details.

 * <tr bgcolor="#ccccff">
 * <td colspan="3">
 * <b>Examples Of SMB URLs When Augmented With A Second Constructor Parameter</b></td>
 * <tr>
 * <td width="20%">
 * <b>First Parameter</b></td>
 * <td><b>Second Parameter</b></td>
 * <td><b>Result</b></td>
 * </tr>
 *
 * <tr>
 * <td width="20%"><code>
 *  smb://host/share/a/b/
 * </code></td>
 * <td width="20%"><code>
 *  c/d/
 * </code></td>

  private final MapIteratorCache<String, String> mapCache;

  public MapCacheTest(MapIteratorCache<String, String> mapCache) {
    this.mapCache = mapCache;
  }

  @Parameters
  public static Collection<Object[]> parameters() {
    Comparator<String> nullsLast = Ordering.natural().nullsLast();

    return Arrays.asList(
        new Object[][] {

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...