code: def test_tail_mass(self):
      assert self.continuous_entropy.tail_mass == 0.00390625
  
      continuous_entropy = ContinuousEntropy(
          prior=self.prior,
          tail_mass=0.0,
      )
  
      assert continuous_entropy.tail_mass == 0.0
  
imports: import pytest
  import torch
  import torch.testing
  from torch import Size
  from neuralcompression.distributions import NoisyNormal
  from neuralcompression.layers import ContinuousEntropy
label_desc: Use image node_id 16 for calling the TestContinuousEntropy obj's underlying member method code with example usage: obj.test_tail_mass() without return types