def maskColumns(self, columns, mask_char="x"):

        for identifier, s in self.mMali.items():
            s.maskColumns(columns, mask_char=mask_char)
Logs out the user
dataset/ETHPy150Open CGATOxford/cgat/CGAT/Mali.py/Mali.maskColumns--crossover with--dataset/ETHPy150Open jasonhancock/cloudstack-python-client/CloudStack/Client.py/Client.logout