Workflow.py: addTransition function of compatbility.

product/ERP5Workflow/Document/Workflow.py

@@ -732,6 +732,10 @@ class Workflow(IdAsReferenceMixin("", "prefix"), XMLObject):
     else:
         return new_sdef
 
+  def addTransition(self, name):
+    self.newContent(portal_type='Transition')
+    self.setReference('dummy_workflow_method')
+
   def showAsXML(self, root=None):
     if root is None:
       root = Element('erp5')