--- a/src/pyams_workflow/interfaces/__init__.py	Wed May 20 12:43:47 2015 +0200
+++ b/src/pyams_workflow/interfaces/__init__.py	Wed May 20 12:44:10 2015 +0200
@@ -9,8 +9,6 @@
 # WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
 # FOR A PARTICULAR PURPOSE.
 #
-from zope.lifecycleevent import ObjectCreatedEvent
-from zope.lifecycleevent.interfaces import IObjectCreatedEvent
 
 __docformat__ = 'restructuredtext'
 
@@ -20,10 +18,12 @@
 # import interfaces
 from zope.annotation.interfaces import IAttributeAnnotatable
 from zope.interface.interfaces import IObjectEvent, ObjectEvent
+from zope.lifecycleevent.interfaces import IObjectCreatedEvent
 
 # import packages
 from pyams_security.schema import Principal
 from zope.interface import implementer, invariant, Interface, Attribute, Invalid
+from zope.lifecycleevent import ObjectCreatedEvent
 from zope.schema import Choice, Datetime, Set, TextLine, Text, List, Object, Int
 
 from pyams_workflow import _
@@ -284,6 +284,9 @@
     def get_versions(self, state=None):
         """Get all versions of object known for this (optional) state"""
 
+    def get_last_versions(self, count=1):
+        """Get last versions of this object. Set count=0 to get all versions."""
+
     def add_version(self, content, state):
         """Return new unique version id"""