Hi
According to http://www.iana.org/assignments/http-methods/http-methods.xhtml REPORT is a valid HTTP method. It's not supported by Swagger, probably because it's less known method. Will future swagger releases support it?

REPORT is similar to GET method because it's safe and idempontent. More importantly it fully supports parameters in request body. Such paramaters aren't recommended in GET requests (response caching) and parameters in URI have their limitations (e.g. request-line length).