Problems setting traffic-group and device-group when creating folder

How should one set both the traffic-group and device-group when creating a folder? Management.Folder.create() folder takes neither as arguments. There is a method Management.Folder.set_device_group(), but in my particular case it errors out because it wants a traffic-group set at the same time. For the life of me I can't figure out what method to call to set the traffic-group on a folder... does anyone know?

 

 

This is what we want it to look like (from tmsh's viewpoint) at the end of it all...

 

 

root@xyzzy-lb1(Active)(/)(tmos) create sys folder /suckawho traffic-group none device-group /Common/device-group-sync

 

root@xyzzy-lb1(Active)(/)(tmos) list sys folder /suckawho

 

sys folder suckawho {

 

device-group Common/device-group-sync

 

traffic-group none

 

}