Pass system works

stdlib/map.krak

@@ -43,6 +43,9 @@ obj map<T,U> (Object, Serializable) {
         pos = values.unserialize(it, pos)
         return pos
     }
+    fun size(): int {
+        return keys.size
+    }
     // the old unnecessary template to prevent generation
     // if not used trick (in this case, changing out U with V)
     fun operator==<V>(other: ref map<T,V>): bool {