def addpair(self, xlo, xhi):
        if xlo > xhi: return
        self.pairs.append((xlo, xhi))
        self.normalize()
dataset/ETHPy150Open Southpaw-TACTIC/TACTIC/src/context/client/tactic-api-python-4.0.api04/Lib/mhlib.py/IntSet.addpair/original