--- a/UndefinedObject.st	Mon Aug 26 09:57:02 2019 +0200
+++ b/UndefinedObject.st	Mon Aug 26 09:57:17 2019 +0200
@@ -158,8 +158,6 @@
 
 
 
-
-
 !UndefinedObject methodsFor:'converting'!
 
 asBoolean
@@ -183,6 +181,7 @@
 doIfNotNil:aBlock
     "if I am a collection, then enumerate myself into aBlock.
      if I am nil, then do nothing.
+     Return the receiver.
      Otherwise, evaluate aBlock with myself as argument. 
      Here, answer nil"