in AspectJ 1.1, set jp's have void return type

docs/teaching/exercises/answers/Answer2d.java

@@ -15,10 +15,10 @@ package answers;
 import figures.*;
 
 aspect Answer2d {
-    int around(int val): (set(int Point._x) || set(int Point._y))
-                         && args(val) {
+    void around(int val): (set(int Point._x) || set(int Point._y))
+                          && args(val) {
         if (val < 0)
             val = 0;
-        return proceed(val);
+        proceed(val);
     }
 }