CheckInFromFileSystem complete example

Hi.

I would like to see a fully working CheckInFromFileSystem example in REST API.

I am using Spring Boot with a RestTemplate. I convert CheckInActionParameters to JSON but I haven't been successfull. I have tried to conver to XML with any luck either.

This is the JSON I send:

{"$type":"CheckInParameters","DocumentVersion":{"Major":1,"Minor":10},"Comments":"New Version","CheckInReturnDocument":"CheckedIn"}

This is the response I get:

The checkInModel field is required.

Thank you in advance.
 

The Postman collection refers to some files that are not available:

I finally did.

It seems that I forgot to set the Content-type of the JSON part.