code: def test_initial_value(self):
      constraint = gpytorch.constraints.Interval(
          1.0, 5.0, transform=None, initial_value=3.0
      )
      lkhd = gpytorch.likelihoods.GaussianLikelihood(
          noise_constraint=constraint
      )
      self.assertEqual(lkhd.noise.item(), 3.0)
  
imports: import math
  import unittest
  import torch
  from torch import sigmoid
  from torch.nn.functional import softplus
  import gpytorch
  from gpytorch.test.base_test_case import BaseTestCase
label_desc: Use image node_id 5 for calling the TestInterval obj's underlying member method code with example usage: obj.test_initial_value() without return types