// in Using IAM.
	//
	// Arn is a required field
	Arn string

	// A unique identifier that contains the role ID and the role session name of
	// the role that is being assumed. The role ID is generated by AWS when the
	// role is created.
	//
	// AssumedRoleId is a required field
	AssumedRoleID string `xml:"AssumeRoleId"`
	// contains filtered or unexported fields
}

In some special use cases (probably not very common), you might want to **restrict** the headers that you want to receive.

You can use Pydantic's model configuration to `forbid` any `extra` fields:

{* ../../docs_src/header_param_models/tutorial002_an_py310.py hl[10] *}

If a client tries to send some **extra headers**, they will receive an **error** response.

	// Officially, the name and comment fields are supposed to be encoded
	// in CP-437 (which is mostly compatible with ASCII), unless the UTF-8
	// flag bit is set. However, there are several problems:
	//
	//	* Many ZIP readers still do not support UTF-8.
	//	* If the UTF-8 flag is cleared, several readers simply interpret the
	//	name and comment fields as whatever the local system encoding is.
	//

                    )
                    field = route.response_fields.get(additional_status_code)
                    additional_field_schema: dict[str, Any] | None = None
                    if field:
                        additional_field_schema = get_schema_from_model_field(
                            field=field,
                            model_name_map=model_name_map,

	default:
		panic("invalid format")
	}

	// Update checksum.
	// This field is special in that it is terminated by a NULL then space.
	var f formatter
	field := b.toV7().chksum()
	chksum, _ := b.computeChecksum() // Possible values are 256..128776
	f.formatOctal(field[:7], chksum) // Never fails since 128776 < 262143
	field[7] = ' '
}

// computeChecksum computes the checksum for the header block.

/**
 * Helper class for language detection.
 */
public class LanguageHelper {
    private static final Logger logger = LogManager.getLogger(LanguageHelper.class);

    /** An array of language fields. */
    protected String[] langFields;

    /** An array of supported languages. */
    protected String[] supportedLanguages;

    /** The language detector. */
    protected LanguageDetector detector;

        Field field = response.getClass().getDeclaredField("converter");
        field.setAccessible(true);
        return field.getInt(response);
    }

    private void setConverter(NetServerEnum2Response response, int value) throws Exception {
        Field field = response.getClass().getDeclaredField("converter");
        field.setAccessible(true);
        field.setInt(response, value);
    }

## List alanları { #list-fields }

Bir attribute’u bir alt tipe sahip olacak şekilde tanımlayabilirsiniz. Örneğin, bir Python `list`:

{* ../../docs_src/body_nested_models/tutorial001_py310.py hl[12] *}

Bu, `tags`’in bir list olmasını sağlar; ancak list’in elemanlarının tipini belirtmez.

## Tip parametresi olan list alanları { #list-fields-with-type-parameter }

You can use Pydantic's model configuration to `forbid` any `extra` fields:

{* ../../docs_src/cookie_param_models/tutorial002_an_py310.py hl[10] *}

If a client tries to send some **extra cookies**, they will receive an **error** response.

            assertEquals(error, echoResponse.getException());
        }
    }

    // Helper methods to set protected fields via reflection
    private void setStatus(ServerMessageBlock2 smb, int status) throws Exception {
        Field statusField = ServerMessageBlock2.class.getDeclaredField("status");
        statusField.setAccessible(true);
        statusField.setInt(smb, status);
    }