docstr: Checks approximate samples from the model against the ground truth.
docstr_tok: ["Checks","approximate","samples","from","the","model","against","the","ground","truth","."]
code: def testEightSchoolsHMC(self):
      """Checks approximate samples from the model against the ground truth."""
      model = eight_schools.EightSchools()
  
      self.validate_ground_truth_using_hmc(
          model,
          num_chains=4,
          num_steps=4000,
          num_leapfrog_steps=10,
          step_size=0.4,
      )
  
imports: from tensorflow_probability.python.internal import test_util
  from inference_gym.internal import test_util
  from inference_gym.targets import eight_schools
label_desc: Use image node_id 2 for calling the EightSchoolsTest obj's underlying member method code with example usage: obj.testEightSchoolsHMC() without return types