code: def setup_class(self):
      self.temp_dir = tempfile.mkdtemp()
  
imports: import contextlib
  import shutil
  import tempfile
  import warnings
  from logging.handlers import BufferingHandler
  import numpy
  import numpy.random
  import pytensor
  from numpy.testing import assert_array_less
  from pytensor.gradient import verify_grad
  import pymc
  from pymc.testing import fast_unstable_sampling_mode
  from tests.models import mv_simple, mv_simple_coarse
label_desc: Use image node_id 1 for calling the StepMethodTester obj's underlying member method code with example usage: obj.setup_class() without return types