apiBody does not support type.

Need apiBody to support the type.

In Postman or some other tool, when I write the request body for a post request, I can specify the body type. like Json or form-data, but looks like in the current apidoc, I did not see this feature, when I have apiSampleRequest added, in the Body section, I always json and fromdata, I think the body type list could be customized will be great.