def METHOD_NAME(self, dataset_tag):
    if self.dataset is not None and isinstance(self.dataset_config, list):
        return
    dataset_attributes = create_dataset_attributes(self.dataset_config, dataset_tag)
    self.dataset, self.metric_executor, preprocessor, self.postprocessor = dataset_attributes
    for _, stage in self.stages.items():
        stage.update_preprocessing(preprocessor)