plugin XEP-0277: service can be None in mbGet, resulting in a request on default pubsub service of profile (i.e. profile's PEP)

src/plugins/plugin_xep_0060.py

@@ -270,7 +270,7 @@ class XEP_0060(object):
     def getItems(self, service, node, max_items=None, item_ids=None, sub_id=None, rsm_request=None, extra=None, profile_key=C.PROF_KEY_NONE):
         """Retrieve pubsub items from a node.
 
-        @param service (JID): pubsub service.
+        @param service (JID, None): pubsub service.
         @param node (str): node id.
         @param max_items (int): optional limit on the number of retrieved items.
         @param item_ids (list[str]): identifiers of the items to be retrieved (can't be used with rsm_request).