code: def get_batch_data_indices(self):
      if not self.batch_data_indices:
          return BATCH_TEST_DATA_IDX
      return self.batch_data_indices
  
imports: import math
  import numpy
  import torch
  from torch.distributions.utils import logits_to_probs
  from pyro.distributions.util import broadcast_shape
label_desc: Use image node_id 3 for calling the Fixture obj's underlying member method code with example usage: obj.get_batch_data_indices() and returns: self, BATCH_TEST_DATA_IDX