Getting Swagger error when specifying "file" as response type

My API can return either JSON or compressed files. I set the following top-level producesspec:

produces:
  - application/json
  - application/x-gzip

However, when on one of my endpoints I specify the following:

responses:
  "200":
    description: Success
      schema:
        type: file

I get the following Swagger Error: Validation error: enum, with an error path pointing to the type: file above.

The specs are not entirely clear to me as to how I should format an endpoint that returns a compressed file, but the above was the result of my understanding. Is this a bug or was my understanding incorrect? If the latter, could someone enlighten me?

[Cloudmersive]

Why was this closed, even though it is not fixed?

[rkyoku]

I still get this error using editor.swagger.io:

0: Object
    code:  "ENUM_MISMATCH"
    message:  "No enum match for: file"
    path: Array [2]
        0:  "schema"
        1:  "type"

And my schema file:

      responses:
        '200':
          schema:
            type: file
          headers:
            Content-type:
              type: string
              description: text/csv; charset=utf-8
            Content-Disposition:
              type: string
              description: attachment; filename=myfile.csv
          description: Export data into a CSV file

Should I do something in particular to benefit from the bugfix?

My current workaround is to use type string