should be part of r35224

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@35225 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/File.py

@@ -32,7 +32,7 @@ import mimetypes
 from AccessControl import ClassSecurityInfo
 from Products.ERP5Type.Base import WorkflowMethod
 from Products.ERP5Type import Permissions, PropertySheet
-from Products.ERP5.Document.Document import Document
+from Products.ERP5.Document.Document import Document, VALID_TEXT_FORMAT_LIST
 from Products.ERP5.Document.Document import ConversionError
 from Products.ERP5Type.Base import Base, removeIContentishInterface
 from Products.CMFDefault.File import File as CMFFile