def load(self, path):
     """load default values if no file"""
     if not SaverMixin.load(self, path):
         CachePersonalMixin.load_defaults(self)
         return False
     else:
         return True
 def __init__(self):
     CachePersonalMixin.__init__(self)
     FileSharingMixin.__init__(self)
     ContactsMixin.__init__(self)
     SaverMixin.__init__(self)