Hi! Can't get 'POST /api/v1/data-files' upload endpoint to work.

No matter how I try combining multipart/form-data body and seemingly correct JSON payload I get 'Request must contain 'name' parameter when POSTing a new file' error.

In the documentation, examples for node.js and curl have errors that render them invalid (-d without section name alongside -F options in curl sample and a reference to nonexistent formData variable and missing file upload part in Node.js sample), so I have trouble finding a minimally working sequence to reproduce.

Also, I've noticed that while official Qlik cloud web interface uses the same REST API for the most of the operations, for file upload they use some non-public `qix-datafiles` endpoint, not the official `data-files` one.

Am I correct in assuming the `data-files` endpoint is broken? If so, how can file upload be performed?