关于HarmonyOS 鸿蒙Next码图生成generateBarcode.createBarcode的问题

关于HarmonyOS 鸿蒙Next码图生成generateBarcode.createBarcode的问题
根据文档示例:https://developer.huawei.com/consumer/cn/doc/harmonyos-references-V13/scan-generatebarcode-V13#section1841142919352，使用generateBarcode.createBarcode生成码图的成功回调是空的对象类型，现在需要返回二维码/条形码图片

demo代码如下：

import { image } from '@kit.ImageKit';
import { scanCore, generateBarcode } from '@kit.ScanKit';
import { BusinessError } from '@kit.BasicServicesKit';


const TAG = 'Index';

@Entry
@Component
struct Index {
  // 以QR码为例，码图生成参数
  @State content: string = '';
  @State options: generateBarcode.CreateOptions = {
    scanType: scanCore.ScanType.QR_CODE,
    height: 200,
    width: 200
  }
  @State result: string = ''

  build() {
    Row() {
      Text(this.result).fontSize(20)
    }
  }

  onPageShow() {
    generateBarcode.createBarcode(this.content, this.options, (error: BusinessError, result: image.PixelMap) => {
      if (error) {
        console.log(`二维码失败========${error.message}`);
        return;
      }
      this.result = JSON.stringify(result);
      console.log(`二维码成功返回========${JSON.stringify(result) + typeof result}`);
      console.log(`this.content========${this.content}`);
      console.log(`this.options========${JSON.stringify(this.options)}`);
    })
  }
}