def ref(self):

        return self.root_ref.child(self.path)
Given a bundle of transcripts, find intervals matching retained
dataset/ETHPy150Open abehaskins/python-firebasin/firebasin/datasnapshot.py/DataSnapshot.ref--crossover with--dataset/ETHPy150Open CGATOxford/cgat/scripts/gtf2gtf.py/find_retained_introns