--- a/AbstractVersionDiffBrowserItem.st	Tue Feb 15 10:09:49 2000 +0100
+++ b/AbstractVersionDiffBrowserItem.st	Tue Feb 15 17:47:37 2000 +0100
@@ -109,10 +109,20 @@
 "
 
     ^false
+!
+
+isSourceRevisionItem
+"
+Used for testing tree items. Define correct behaviour in subclasses
+
+<return: Boolean>
+"
+
+    ^false
 ! !
 
 !AbstractVersionDiffBrowserItem class methodsFor:'documentation'!
 
 version
-    ^ '$Header: /cvs/stx/stx/libtool/AbstractVersionDiffBrowserItem.st,v 1.2 2000-01-14 15:57:20 cg Exp $'
+    ^ '$Header: /cvs/stx/stx/libtool/AbstractVersionDiffBrowserItem.st,v 1.3 2000-02-15 16:47:37 ps Exp $'
 ! !