code: def predict_proba(self, test_set):
      raise NotImplementedError()
  
imports: import unittest
  import pytest
  import torch
  import numpy
  from small_text.integrations.pytorch.exceptions import PytorchNotFoundError
label_desc: Use image node_id 5 for calling the PytorchClassifierImplementation obj's underlying member method code with example usage: obj.predict_proba(test_set) without return types