def get_buddy(self, objid):
buddy = self._buddies.get(objid)
if buddy is None:
_logger.debug('Creating new buddy at .../%s', objid)
# we don't know yet this buddy
buddy = Buddy(self._session_bus, objid)
buddy.connect("validity-changed", self._buddy_validity_changed_cb)
buddy.connect("disappeared", self._buddy_disappeared_cb)
self._buddies[objid] = buddy
return buddy
