code: def data_directory(self):
      here = os.path.dirname(os.path.abspath(__file__))
      data_directory = os.path.join(here, "..", "saved_models")
      return data_directory
  
imports: import os
  import numpy
  import pytest
  from ...None import from_cmdstan
  from ..helpers import check_multiple_attrs
label_desc: Use image node_id 1 for calling the TestDataCmdStan obj's underlying member method code with example usage: obj.data_directory() and returns: data_directory