code: def predict_proba_on_batch(self, X_batch):
      raise NotImplementedError(
          "Regression models cannot predict probability"
      )
  
file_path: deepchem/contrib/torch/torch_multitask_regression.py
imports: import torch
  import numpy
  from torch_model import TorchMultitaskModel
label_desc: Use image node_id 6 for calling the TorchMultitaskRegression obj's underlying member method code with example usage: obj.predict_proba_on_batch(X_batch) without return types