diff -r a5e56749ca3d -r 3d259e1718ef src/pyams_content/shared/topic/interfaces/__init__.py
--- a/src/pyams_content/shared/topic/interfaces/__init__.py	Fri Oct 12 14:33:03 2018 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,43 +0,0 @@
-#
-# Copyright (c) 2008-2015 Thierry Florac <tflorac AT ulthar.net>
-# All Rights Reserved.
-#
-# This software is subject to the provisions of the Zope Public License,
-# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
-# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
-# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
-# FOR A PARTICULAR PURPOSE.
-#
-
-__docformat__ = 'restructuredtext'
-
-from zope.interface import Interface
-
-from pyams_content import _
-from pyams_content.shared.common.interfaces import ISharedContent, ISharedToolPortalContext, \
-    IWfSharedContentPortalContext
-
-
-TOPIC_CONTENT_TYPE = 'topic'
-TOPIC_CONTENT_NAME = _("Topic")
-
-
-class ITopicManager(ISharedToolPortalContext):
-    """Topic manager interface"""
-
-
-class ITopicManagerFactory(Interface):
-    """Topic manager factory interface"""
-
-
-class IWfTopic(IWfSharedContentPortalContext):
-    """Topic interface"""
-
-
-class IWfTopicFactory(Interface):
-    """Topic parent interface"""
-
-
-class ITopic(ISharedContent):
-    """Workflow managed topic interface"""