code: def _prior_distribution(self):
      return self._prior_val
  
file_path: probability/spinoffs/inference_gym/inference_gym/targets/bayesian_model_test.py
imports: import tensorflow_probability
  from tensorflow_probability.python.internal import test_util
  from inference_gym import targets
  from inference_gym.internal import test_util
label_desc: Use image node_id 2 for calling the TestModel obj's underlying member method code with example usage: obj._prior_distribution() and returns: self