def get_multi(self, keys, prefix='', **kw):
     return prefix_keys(keys, prefix, lambda k: self.simple_get_multi(k, **kw))

 def get_multi(self, keys, prefix='', allow_local=True, stale=False):
     call_fn = lambda k: self.simple_get_multi(k, allow_local=allow_local,
                                               stale=stale)
     return prefix_keys(keys, prefix, call_fn)

 def get_multi(self, keys, prefix=''):
     return prefix_keys(keys, prefix, self.simple_get_multi)