diff -r 39b7a91a3f4c -r 032825bbacab devtools/fake.py
--- a/devtools/fake.py	Thu Jan 23 12:32:16 2014 +0100
+++ b/devtools/fake.py	Thu Jan 23 13:47:28 2014 +0100
@@ -191,9 +191,6 @@
             source.after_entity_insertion(session, extid, entity)
             return eid
 
-    def eid2extid(self, source, eid, session=None):
-        return self.eids[eid]
-
 
 class FakeSource(object):
     dbhelper = get_db_helper('sqlite')