[IMP] use new style to make selection extendable

account_banking_pain_base/models/payment_line.py

@@ -42,8 +42,7 @@ class PaymentLine(orm.Model):
             "company. Depicts 'What do you want to say to the recipient "
             "about this order ?'"),
         'struct_communication_type': fields.selection(
-            lambda self, *args, **kwargs:
-                self._get_struct_communication_types(*args, **kwargs),
+            '_get_struct_communication_types',
             'Structured Communication Type'),
     }