code: def on_fold_end(self):
      self.data_oof.prediction.on_fold_end(
          self.validation_index, self.experiment_params["runs"]
      )
      super().on_fold_end()
  
imports: from hyperparameter_hunter.callbacks.bases import BasePredictorCallback
  from hyperparameter_hunter.data import OOFDataset, HoldoutDataset, TestDataset
label_desc: Use image node_id 6 for calling the PredictorOOF obj's underlying member method code with example usage: obj.on_fold_end() without return types