code: public void setTail(final WComponent tail) {
  		DecoratedLabelModel model = getOrCreateComponentModel();
  
  		if (model.tail != null) {
  			remove(model.tail);
  		}
  
  		model.tail = tail;
  
  		if (tail != null) {
  			add(tail);
  		}
  	}
docs: Sets the label tail content.
  
  @param tail the tail content, or null for no content.