How can I specify accepted input objects for use by nswag?

NSwag respects the attribute ProducesResponseType when building Swagger documents. E.g.

[ProducesResponseType(typeof(MyClass), 201)]

I want to specify input types. Is there an attribute such as ConsumesRequestType that I can use to specify multiple types? E.g.

[ConsumesRequestType(typeof(MyClass))]

If no, how can I make an attribute myself or achieve similar functionality? Thanks!