--- a/ResourceRetriever.st	Mon Sep 18 09:10:55 2017 +0200
+++ b/ResourceRetriever.st	Tue Sep 26 12:27:32 2017 +0200
@@ -339,19 +339,19 @@
 !ResourceRetriever methodsFor:'testing'!
 
 isDefined
-    "returns true if resource exists
-    "
-    selector notNil ifTrue:[
-        ^ (resourceOwner notNil or:[className notNil])
-    ].
-  ^ false
+    "returns true if resource exists"
+
+    ^ selector notNil and:[resourceOwner notNil or:[className notNil]].
+
+    "Modified: / 25-09-2017 / 17:17:57 / stefan"
 !
 
 notDefined
-    "returns false if resource is not defined
-    "
-    self isDefined ifTrue:[^ false ]
-                  ifFalse:[^ true  ]
+    "returns false if resource is not defined"
+
+    ^ self isDefined not.
+
+    "Modified: / 25-09-2017 / 17:17:03 / stefan"
 ! !
 
 !ResourceRetriever class methodsFor:'documentation'!