<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def abort(self):
 """Abort all SBIs associated with the subarray."""

        for sbi_id in self.sbi_ids:
            sbi = SchedulingBlockInstance(sbi_id)
            sbi.abort()
        self.set_state('ABORTED')