Trim the list, removing all values not within the slice
            between @start and @end.

            @start and @end can be negative numbers just like python slicing
            notation.

            @start: #int start position
            @end: #int end position

            -> result of :meth:redis.StrictRedis.ltrim

def trim(self, start, end):
        """ Trim the list, removing all values not within the slice
            between @start and @end.

            @start and @end can be negative numbers just like python slicing
            notation.

            @start: #int start position
            @end: #int end position

            -> result of :meth:redis.StrictRedis.ltrim
        """
        return self._client.ltrim(self.key_prefix, start, end)