thodg/cl-unix-cybernetics

diff --git a/core/defs.lisp b/core/defs.lisp
index 2e84350..13cde8d 100644
--- a/core/defs.lisp
+++ b/core/defs.lisp
@@ -126,7 +126,10 @@
 
 (declaim (ftype (function (resource) string) resource-id))
 
+(defgeneric resource-additional-specs (resource os))
 (defgeneric resource-probes-properties (resource))
+(defgeneric resource-operations-properties (resource))
+(defgeneric sync (resource))
 
 (setq *the-resource-class* (find-class 'resource))