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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_sub_array_sbi_ids(self, sub_array_id):
 """Get Scheduling Block Instance ID associated with sub array id"""

        _ids = []
        sbi_ids = self.get_sched_block_instance_ids()
        for details in self.get_block_details(sbi_ids):
            if details['sub_array_id'] == sub_array_id:
                _ids.append(details['id'])
        return sorted(_ids)