@reducer('check', 'or', 'check')
    def _make_or_expr(self, check1, _or, check2):

        return [('or_expr', OrCheck([check1, check2]))]
Columns from the choosers table that are used for filtering.
dataset/ETHPy150Open CiscoSystems/avos/openstack_dashboard/openstack/common/policy.py/ParseState._make_or_expr--crossover with--dataset/ETHPy150Open UDST/urbansim/urbansim/models/dcm.py/MNLDiscreteChoiceModelGroup.choosers_columns_used