def action(self, request, datum_id):
        raise NotImplementedError('action() must be defined for %s'
                                  % self.__class__.__name__)
Override this to specify the beginning of the graph representation.
dataset/ETHPy150Open Havate/havate-openstack/proto-build/gui/horizon/Horizon_GUI/horizon/tables/actions.py/BatchAction.action--crossover with--dataset/ETHPy150Open igordejanovic/Arpeggio/arpeggio/export.py/Exporter._start