code: def testScores(self):
      s = [0.1, 2.0, 5.0]
      dist = plackett_luce.PlackettLuce(scores=s, validate_args=True)
      self.assertAllClose(s, self.evaluate(dist.scores))
      self.assertAllEqual([3], dist.scores.shape)
  
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 3 for calling the PlackettLuceTest obj's underlying member method code with example usage: obj.testScores() without return types