code: def setUp(self):
      super(PlackettLuceTest, self).setUp()
      self._rng = np.random.RandomState(42)
  
imports: import numpy
  import scipy
  import tensorflow.compat.v1
  import tensorflow.compat.v2
  from tensorflow_probability.python.bijectors import identity
  from tensorflow_probability.python.distributions import plackett_luce
  from tensorflow_probability.python.internal import tensorshape_util
  from tensorflow_probability.python.internal import test_util
  from tensorflow_probability.python.util import deferred_tensor
label_desc: Use image node_id 1 for calling the PlackettLuceTest obj's underlying member method code with example usage: obj.setUp() without return types