code: def setUp(self):
      self._rng = np.random.RandomState(123)
  
imports: import numpy
  from scipy import stats
  import tensorflow.compat.v1
  import tensorflow.compat.v2
  from tensorflow_probability.python.distributions import triangular
  from tensorflow_probability.python.distributions.internal import statistical_testing
  from tensorflow_probability.python.internal import test_util
label_desc: Use image node_id 1 for calling the TriangularTestStaticShape obj's underlying member method code with example usage: obj.setUp() without return types