如何在另一列中使用DynamoDBAutoGeneratedKey？

import software.amazon.awssdk.services.dynamodb.DynamoDbClient;
import software.amazon.awssdk.services.dynamodb.model.*;

public class DynamoDBExample {
    public static void main(String[] args) {
        DynamoDbClient client = DynamoDbClient.create();

        // 创建表格请求
        CreateTableRequest createTableRequest = CreateTableRequest.builder()
                .tableName("MyTable")
                .keySchema(KeySchemaElement.builder()
                        .attributeName("id")
                        .keyType(KeyType.HASH)
                        .build())
                .attributeDefinitions(AttributeDefinition.builder()
                        .attributeName("id")
                        .attributeType(ScalarAttributeType.S)
                        .build())
                .provisionedThroughput(ProvisionedThroughput.builder()
                        .readCapacityUnits(5L)
                        .writeCapacityUnits(5L)
                        .build())
                .build();

        // 创建表格
        CreateTableResponse createTableResponse = client.createTable(createTableRequest);
        String tableArn = createTableResponse.tableDescription().tableArn();

        // 插入新项目
        PutItemRequest putItemRequest = PutItemRequest.builder()
                .tableName("MyTable")
                .item(
                        // 使用DynamoDBAutoGeneratedKey生成唯一键值
                        AttributeValue.builder()
                                .s(DynamoDbAutoGeneratedKey.builder().build().toString())
                                .build(),
                        AttributeValue.builder()
                                .s("Value1")
                                .build()
                )
                .build();

        client.putItem(putItemRequest);

        // 查询项目
        GetItemRequest getItemRequest = GetItemRequest.builder()
                .tableName("MyTable")
                .key(
                        // 使用自动生成的键值引用特定项目
                        AttributeValue.builder()
                                .s(putItemRequest.item().get("id").s())
                                .build()
                )
                .build();

        GetItemResponse getItemResponse = client.getItem(getItemRequest);
        System.out.println(getItemResponse.item());

        // 更新项目
        UpdateItemRequest updateItemRequest = UpdateItemRequest.builder()
                .tableName("MyTable")
                .key(
                        // 使用自动生成的键值引用特定项目
                        AttributeValue.builder()
                                .s(putItemRequest.item().get("id").s())
                                .build()
                )
                .attributeUpdates(
                        // 更新值
                        AttributeValueUpdate.builder()
                                .value(AttributeValue.builder().s("NewValue").build())
                                .action(AttributeAction.PUT)
                                .build()
                )
                .build();

        client.updateItem(updateItemRequest);

        // 删除表格
        DeleteTableRequest deleteTableRequest = DeleteTableRequest.builder()
                .tableName("MyTable")
                .build();

        client.deleteTable(deleteTableRequest);
    }
}