diff --git a/src/gen/lib/baseobj.py b/src/gen/lib/baseobj.py
index 0d6fa25da..fc37230b5 100644
--- a/src/gen/lib/baseobj.py
+++ b/src/gen/lib/baseobj.py
@@ -186,3 +186,8 @@ class BaseObject(object):
         :type acquisition: BaseObject
         """
         pass
+
+    @classmethod
+    def create(cls, data):
+        return cls().unserialize(data)
+
diff --git a/src/gen/lib/event.py b/src/gen/lib/event.py
index db09164df..49ba5fc5c 100644
--- a/src/gen/lib/event.py
+++ b/src/gen/lib/event.py
@@ -129,6 +129,7 @@ class Event(SourceBase, NoteBase, MediaBase, AttributeBase,
         AttributeBase.unserialize(self, attribute_list)
         SourceBase.unserialize(self, source_list)
         NoteBase.unserialize(self, note_list)
+        return self
 
     def _has_handle_reference(self, classname, handle):
         """
diff --git a/src/gen/lib/family.py b/src/gen/lib/family.py
index 825db140e..a4215a497 100644
--- a/src/gen/lib/family.py
+++ b/src/gen/lib/family.py
@@ -147,6 +147,7 @@ class Family(SourceBase, NoteBase, MediaBase, AttributeBase, LdsOrdBase,
         NoteBase.unserialize(self, note_list)
         LdsOrdBase.unserialize(self, lds_seal_list)
         TagBase.unserialize(self, tag_list)
+        return self
 
     def _has_handle_reference(self, classname, handle):
         """