--- a/BreakpointNode.st	Sat Jul 25 11:39:03 2020 +0200
+++ b/BreakpointNode.st	Sun Jul 26 18:26:52 2020 +0200
@@ -184,6 +184,14 @@
     ^ expression isMessage
 !
 
+isUnaryMessage
+    "must forward - otherwise cascades won't work"
+
+    ^ expression isUnaryMessage
+
+    "Created: / 26-07-2020 / 18:24:18 / cg"
+!
+
 numArgs
     <resource: #obsolete>