Example value for ParamSchema

[cdupont]

I'd like to add an example value for a ParamSchema, to be able to see it in Swagger-UI.
For example for a Schema, I added an example:

instance ToSchema Foo where
   declareNamedSchema proxy = genericDeclareNamedSchema defaultSchemaOptions proxy
         & mapped.schema.example ?~ toJSON defaultFoo

The example value "defaultFoo" will render in Swagger for the body of a request. But for a URL parameter, how to get the example?

[phadej]

Parameter objects doesn't seem to include examples https://github.com/OAI/OpenAPI-Specification/blob/master/versions/2.0.md#parameter-object says

There are various other fields you can use.

Not in the spec: Swagger UI won't show them either :(

I'm not sure about OpenAPI3