New headers for dummy MH

plugins/dummy_datasource/migration_handler.py

 
 ##@brief Abtract class for migration handlers
 class DummyMigrationHandler(object):
+
+    ##@brief Create a new migration handler given DB connection options
     def __init__(self, *args, **kwargs):
         pass
     
+    ##@brief DB initialisation
+    #@param emclass_list list : list of EmClasses concerned by this MH
+    def init_db(self, emclass_list):
+        pass
+    
+    ##@todo redefine
     def register_change(self, model, uid, initial_state, new_state):
         pass
 
+    ##@todo redefine
     def register_model_state(self, em, state_hash):
         pass
-
-    def init_db(self):
-        pass
+