[Vala] Gst.TypeFindFactory cast fails

[Robert Powell <rob yorba org>]

Hi,

I'm trying to use Gst.TypeFindFactory, but the cast call generates incorrect
C code.

Gst.TypeFindFactory type_find = (Gst.TypeFindFactory)feature;

generates

GstTypeFindFactory* type_find;
type_find = _gst_object_ref0 (GST_TYPEFIND_FACTORY (feature));

but gst/gsttypefindfactory.h has

#define GST_TYPE_TYPE_FIND_FACTORY
(gst_type_find_factory_get_type())

Is there any vapi magic that will tell vala to generate
GST_TYPE_TYPE_FIND_FACTORY rather than GST_TYPEFIND_FACTORY?  I could not
find any combination that worked.

Thanks,

Rob