add method in order to know which suffix should be used

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@43806 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Type/id_as_reference.py

@@ -59,6 +59,10 @@ def IdAsReferenceMixin(suffix):
               " property sheet, due to pending activities" % 
                (new_id, parent.getId()))
             
+    security.declareProtected(Permissions.AccessContentsInformation,
+                              'getIdAsReferenceSuffix')
+    def getIdAsReferenceSuffix(self):
+      return suffix
 
     security.declareProtected(Permissions.AccessContentsInformation,
                               'getReference')