code: def _predict_proba_dropout_sampling(
      self, dataset_iter, logits_transform, dropout_samples=2
  ):
      pass
  
imports: import unittest
  import pytest
  import torch
  import numpy
  from small_text.integrations.pytorch.exceptions import PytorchNotFoundError
label_desc: Use image node_id 7 for calling the PytorchClassifierImplementation obj's underlying member method code with example usage: obj._predict_proba_dropout_sampling(dataset_iter, logits_transform, dropout_samples) without return types