this.ensureOpened();
Collection<Buddy> list = this.context.getFetionStore().getBuddyListByCord(cord);
if(list!=null && list.size()>0)
throw new IllegalArgumentException(cord+" is not empty, please move out the buddies in this cord and try again.");
SipcRequest request = this.messageFactory.createDeleteCordRequest(cord.getId());
request.setResponseHandler(new DeleteCordResponseHandler(context,this, listener));
this.process(request);
}