def batch_mutate(self, mutation_map, consistency_level):
    """
      Mutate many columns or super columns for many row keys. See also: Mutation.

      mutation_map maps key to column family to a list of Mutation objects to take place at that scope.
    *

    Parameters:
     - mutation_map
     - consistency_level
    """
    self._seqid += 1
    d = self._reqs[self._seqid] = defer.Deferred()
    self.send_batch_mutate(mutation_map, consistency_level)
    return d
Mutate many columns or super columns for many row keys. See also: Mutation.

      mutation_map maps key to column family to a list of Mutation objects to take place at that scope.
    *

    Parameters:
     - mutation_map
     - consistency_level