Informs about opening a file with the ID specified in the request for editing, locking it from being deleted or moved (this method is called by the mobile editors).
sent in url
|File ID||string||some text|
POST api/2.0/files/file/%22some+text%22/startedit Host: yourportal.onlyoffice.com Content-Type: application/json Accept: application/json
File key for Document Service