有没有办法在flutter中写入预先存在的文本文件？

import 'dart:io';

void writeToFile(String filePath, String content) {
  File file = File(filePath);
  file.writeAsStringSync(content);
}

void main() {
  String filePath = 'path/to/your/file.txt';
  String content = 'Hello, World!';

  writeToFile(filePath, content);
}

dependencies:
  flutter:
    sdk: flutter

dev_dependencies:
  flutter_test:
    sdk: flutter

# 添加下面这行
dependency_overrides:
  flutter:
    sdk: flutter

# 添加下面这行
flutter:
  assets:
    - path/to/your/file.txt