def __init__(self, fn):
        BaseSignal.__init__(self, fn)
:param backup_id: backup id
dataset/ETHPy150Open daler/metaseq/metaseq/_genomic_signal.py/IntervalSignal.__init__--crossover with--dataset/ETHPy150Open opennode/nodeconductor/nodeconductor/iaas/backend.py/OpenStackBackend.delete_backup