And you can also declare body parameters as optional, by setting the default to `None`:

{* ../../docs_src/body_multiple_params/tutorial001_an_py310.py hl[18:20] *}

/// note

Notice that, in this case, the `item` that would be taken from the body is optional. As it has a `None` default value.

///

## Multiple body parameters { #multiple-body-parameters }

		return true
	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
		return true
	case reflect.Float32, reflect.Float64:
		return true
	default:
		return false
	}
}

// ExplainSQL generate SQL string with given parameters, the generated SQL is expected to be used in logger, execute it might introduce a SQL injection vulnerability

#
# Properties defined here can be overridden with specific settings,
# like in rpm/packaging.properties and deb/packaging.properties.

# Environment file
packaging.env.file=

# Default configuration directory and file to use in bin/plugin script

# Default values for min/max heap memory allocated to fess java process
packaging.fess.heap.min=256m
packaging.fess.heap.max=1g

# Specifies the maximum file descriptor number

							return
						}
					default:
						err = dc.Skip()
						if err != nil {
							err = msgp.WrapError(err, "Entries", za0001)
							return
						}
					}
				}
				z.Entries[za0001] = za0002
			}
		case "v":
			z.Version, err = dc.ReadInt()
			if err != nil {
				err = msgp.WrapError(err, "Version")
				return
			}
		default:
			err = dc.Skip()
			if err != nil {

  /**
   * Returns the element at the specified position in an iterable or a default value otherwise.
   *
   * <p><b>{@code Stream} equivalent:</b> {@code
   * stream.skip(position).findFirst().orElse(defaultValue)} (returns the default value if the index
   * is out of bounds)
   *
   * @param position position of the element to return
   * @param defaultValue the default value to return if {@code position} is greater than or equal to

 */
public abstract class DomUtil {

    /**
     * Do not instantiate.
     */
    protected DomUtil() {
    }

    /**
     * Retrieves the XML content as an {@link InputStream} using the platform's default encoding.
     *
     * @param contents
     *            The content. Must not be {@literal null}.
     * @return {@link InputStream}
     */
    public static InputStream getContentsAsStream(final String contents) {

    /**
     * Creates a Type-2 message using default values from the current
     * environment.
     *
     * @param tc
     *            context to use
     */
    public Type2Message(final CIFSContext tc) {
        this(tc, getDefaultFlags(tc), null, null);
    }

    /**
     * Creates a Type-2 message in response to the given Type-1 message
     * using default values from the current environment.
     *

/**
 * Helper class for sending notifications to various platforms.
 */
public class NotificationHelper {

    /**
     * Default constructor.
     */
    public NotificationHelper() {
        // Default constructor
    }

    private static final Logger logger = LogManager.getLogger(NotificationHelper.class);

    /** Line feed character for message formatting. */

    protected FessConfig fessConfig;

    /** Behavior class for user database operations */
    @Resource
    protected UserBhv userBhv;

    /**
     * Default constructor for GroupService.
     */
    public GroupService() {
        // Default constructor
    }

    /**
     * Retrieves a paginated list of groups based on the provided pager criteria.

 */
public abstract class SessionServicePacket {

    /**
     * Default constructor for SessionServicePacket.
     * Creates a new session service packet instance.
     */
    public SessionServicePacket() {
        // Default constructor
    }

    // session service packet types
    static final int SESSION_MESSAGE = 0x00;