<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def jump_to(self, *, iterator_type, sequence_number=None):
 """Move to a new position in the shard using the standard parameters to GetShardIterator. :param str iterator_type: "trim_horizon", "at_sequence", "after_sequence", "latest" :param str sequence_number: *(Optional)* Sequence number to use with at/after sequence. Default is None. """

        # Just a simple wrapper; let the caller handle RecordsExpired
        self.iterator_id = self.session.get_shard_iterator(
            stream_arn=self.stream_arn,
            shard_id=self.shard_id,
            iterator_type=iterator_type,
            sequence_number=sequence_number)
        self.iterator_type = iterator_type
        self.sequence_number = sequence_number
        self.empty_responses = 0