code: def datadir(request):
      """
      Directory for storing test data for latter inspection.
      """
      return _datadir(request)
  
file_path: coremltools/coremltools/test/optimize/torch/conftest.py
imports: import os
  import shutil
  from coremltools.test.optimize.torch.models.mnist import mnist_dataset, mnist_model, mnist_model_large, mnist_model_quantization
  from coremltools.test.optimize.torch.pruning.pruning_utils import get_model_and_pruner
  import pytest
label_desc: Use image node_id 3 for calling a global function with example usage: datadir(request) and returns: _datadir