[API] How to logout

ref: https://github.com/metabase/metabase/blob/master/docs/api-documentation.md#delete-apisession

language: Rails(ruby)

When I request, response is below

{
“errors”: {
“session_id”: “value must be a non-blank string.”
}
}

Question: How to set session_id in programs?

I think the Wiki page on the REST API has an answer:
https://github.com/metabase/metabase/wiki/Using-the-REST-API#authorizing