Support Expanding @ModelAttribute Request Params

Spring controller request params that are marked with @ModelAttribute
will now be flattened. In other words, instead of generating an
operation model that contains a complex object in the request, the
operation model will
appear to have been defined as accepting individual
simple type request parameters.

Using the @ModelAttribute on a controller method param
declares that Spring should bind request parameters to
the model object. As such, the Swagger model should
really show individual parameters, and not a complex
object type.
@acwatson True that spring supports deep object data binding, but not magically! 

To my understanding, and I may be wrong here, but doesn't the data binding need property editors and converters? There is *something* that converts a form url encoded string to an object representation. So from a perspective of the swagger client, wouldn't it still see it as a string (or appropriate primitive)?