HTTP + CSV
         The following are sample HTTP requests and responses. 
            The placeholders shown need to be replaced with actual values.
POST /csv/reply/GetGroupedCategoriesRequest HTTP/1.1 
Host: api-beta.ghs-automotive.nl 
Content-Type: text/csv
Content-Length: length
 
HTTP/1.1 200 OK
Content-Type: text/csv
Content-Length: length
{Unable to show example output for type 'IList`1' using the custom 'csv' filter}Cannot create an instance of an interface.