Comment about a call on a missing method

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@3336 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/AccountingTransactionLine.py

@@ -209,6 +209,7 @@ Une ligne tarifaire."""
     resource = self.getResourceValue()
     source = self.getSourceValue()
     if source is not None and resource is not None:
+      # XXX convertCurrency is not defined
       return resource.convertCurrency(result, source.getPriceCurrencyValue())    
     return None