Missing import

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@29859 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/mixin/cached_convertable.py

@@ -31,6 +31,8 @@ import md5
 
 from AccessControl import ClassSecurityInfo
 from Products.ERP5Type import Permissions
+from Products.CMFCore.utils import getToolByName
+from Products.ERP5Type.Cache import DEFAULT_CACHE_SCOPE
 
 class CachedConvertableMixin:
   """