--- a/reports/Builder__Report.st	Wed Feb 12 16:15:17 2014 +0100
+++ b/reports/Builder__Report.st	Tue May 27 18:05:54 2014 +0200
@@ -105,6 +105,16 @@
     "Modified: / 14-03-2011 / 23:45:40 / Jan Vrany <jan.vrany@fit.cvut.cz>"
 ! !
 
+!Report class methodsFor:'queries'!
+
+isAbstract
+    "Return if this class is an abstract class.
+     True is returned here for myself only; false for subclasses.
+     Abstract subclasses must redefine again."
+
+    ^ self == Builder::Report.
+! !
+
 !Report class methodsFor:'running'!
 
 runClasses: aCollectionOfClasses