anchor.diff:  (defrpc call-monitor 2 
     (:list :string my-id (:varray* :octet 16))
     stat-res
  +  (:program nsm 1)
     (:arg-transformer (hostname &key (callback-hostname "localhost") (program 0) (version 0) (proc 0) private)
       (list (list hostname 
                   (make-my-id :name callback-hostname
  
positive.code: (defrpc call-notify 6
    (:list :string :int32)
    :void
    (:arg-transformer (name state) (list name state))
    (:documentation "This RPC is used to inform servers that our local state has changed. NAME should be the local hostname, STATE should be the local state number.")
    (:handler #'%handle-notify))
  
negative.code:   (list :fail 0))
  
  (defrpc call-stat 1 :string stat-res
    (:program nsm 1)
    (:arg-transformer (hostname) hostname)
    (:transformer (res)
      (destructuring-bind (stat seqno) res
  