title: Add csv file to HTTP POST
body: <p>I want to send a postman HTTP POST. In this request, for key 'fisier', I like to attach a csv file. How this can be done?</p>
  <p><a href="https://i.stack.imgur.com/Pnkii.png" rel="noreferrer">https://i.stack.imgur.com/Pnkii.png</a></p>