如何在Flutter上模糊图像本身？

dependencies:
  flutter_blurhash: ^2.0.0

import 'package:flutter_blurhash/flutter_blurhash.dart';

class BlurImage extends StatelessWidget {
  final String blurHash; // 模糊图像的BlurHash字符串

  BlurImage(this.blurHash);

  @override
  Widget build(BuildContext context) {
    return BlurHash(hash: blurHash);
  }
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('Blur Image'),
        ),
        body: Center(
          child: BlurImage('L5H2EC=PM+yV0g-mq.wG9c010J}I'),
        ),
      ),
    );
  }
}