code: def test_target_accept(self):
      accept = self.trace[self.burn :]["mean_tree_accept"]
      npt.assert_allclose(accept.mean(), self.step.target_accept, 1)
  
imports: import arviz
  import numpy
  import numpy.testing
  import pytensor.tensor
  from scipy import stats
  import pymc
  from pymc.backends.arviz import to_inference_data
  from pymc.util import get_var_name
label_desc: Use image node_id 2 for calling the NutsFixture obj's underlying member method code with example usage: obj.test_target_accept() without return types