def apply(self, dataset, can_fit=False):
        for item in self.items:
            item.apply(dataset, can_fit)
Returns a "watersimple" survey object,
dataset/ETHPy150Open lisa-lab/pylearn2/pylearn2/datasets/preprocessing.py/Pipeline.apply--crossover with--dataset/ETHPy150Open kobotoolbox/kobocat/onadata/apps/logger/factory.py/_load_simple_survey_object