code: def test_lacking_mode_and_quantile(self):
      dist = round_adapters.RoundAdapter(
          tfp.distributions.Logistic(loc=1.5, scale=1.5)
      )
      with self.assertRaises(NotImplementedError):
          dist.mode()
      with self.assertRaises(NotImplementedError):
          dist.quantile(0.75)
  
imports: from absl.testing import parameterized
  import numpy
  import tensorflow
  import tensorflow_probability
  from tensorflow_compression.python.distributions import deep_factorized
  from tensorflow_compression.python.distributions import round_adapters
label_desc: Use image node_id 3 for calling the AdaptersTest obj's underlying member method code with example usage: obj.test_lacking_mode_and_quantile() without return types