如何使用React Native和react-native-fs设置下载文件的头？

import RNFS from 'react-native-fs';

const downloadFile = () => {
  const options = {
    fromUrl: 'http://example.com/file.pdf', // 下载文件的URL
    toFile: `${RNFS.DocumentDirectoryPath}/file.pdf`, // 下载文件的保存路径
    headers: {
      'Authorization': 'Bearer your_token', // 设置请求头，例如设置授权头
      'Content-Type': 'application/json', // 设置其他请求头
    },
    progress: (data) => {
      const percentage = ((100 * data.bytesWritten) / data.contentLength).toFixed(2); // 下载进度
      console.log(`Downloaded ${percentage}%`);
    },
  };

  RNFS.downloadFile(options).promise
    .then((response) => {
      console.log('File downloaded successfully');
    })
    .catch((error) => {
      console.log('Error downloading file: ', error);
    });
};

downloadFile();