onlyoffice - onlyoffice 从 API 更新文件内容

Question

有如何更新文件内容的描述：api/2.0/files/{fileId}/update

PUT api/2.0/files/some+text/update
Host: yourportal.onlyoffice.com
Content-Type: application/json
Accept: application/json

{
  "file": "**what should be here? is this file data? in what format?**"
}