'Model-save hook.
Args:
request (Request): Incoming request.
obj (Object): Database object.
form (Form): Form instance.
change (bool): If this is a change or a new object.'

def save_model(self, request, obj, form, change):

    obj.save()
    if (not change):
        obj.set_class_from_typeclass(typeclass_path=settings.BASE_CHANNEL_TYPECLASS)
    obj.at_init()
