Using _WRAP_CTOR() / _WRAP_CREATE() in gstreamermm

[José Alburquerque <jaalburquerque cox net>]

Hi.  I'm wondering:  Would using _WRAP_CTOR() and _WRAP_CREATE() be 
ideal for classes such as Gst::Element?  I'm running into some warnings 
I can't quite understand in relation to this after using these and then 
running tests/test-create-element:

[08:03][jose sweety:/usr/src/jhbuild-sources/gstreamermm/tests]$ 
./test-create-element

(lt-test-create-element:15326): glibmm-WARNING **: 
Glib::ConstructParams::ConstructParams(): object class 
"gtkmm__GstElement" has no property named "factory"
Successfully created gst element 'gtkmm__gstelement0'.