anchor.diff:    ((widget
       :allocation :arg
       :location "GtkAccelLabel::accel_widget"
  -    :accessor accel-widget
  -    :initarg :widget
  +    :accessor accel-label-accel-widget
  +    :initarg :accel-widget
       :type widget)
      (width
       :allocation :virtual
  
positive.code: 
  
  (defclass pixmap (misc)
    ()
    (:metaclass widget-class)
    (:alien-name "GtkPixmap"))
  
  
negative.code:   (:metaclass container-class)
    (:alien-name "GtkListItem"))
  
  (defclass list-item-child (item-child)
    ()
    (:metaclass child-class))
    
  
  ;; deprecated
  