code: def get_num_test_data(self):
      return len(self.test_data)
  
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 6 for calling the Fixture obj's underlying member method code with example usage: obj.get_num_test_data() and returns: len