code: def random(self, *args, **kwargs):
          
          indexer = Random()
          self.add(indexer)
  
          return self
docs: Add a random index.
  
          Shortcut of :class:`recordlinkage.index.Random`::
  
              from recordlinkage.index import Random
  
              indexer = recordlinkage.Index()
              indexer.add(Random())