code: def testUnconstrainedUniformUsageExplicitBijectors(self):
      seed = test_util.test_seed(sampler_type="stateless")
      model_dist = jds.JointDistributionSequential(
          [
              uniform.Uniform(0.0, 1.0),
              half_cauchy.HalfCauchy(0.0, 1.0),
              lambda sigma, mu: normal.Normal(mu, sigma),
          ]
      )
      bijectors = [sigmoid.Sigmoid(), exp.Exp(), identity.Identity()]
      init_dist = initialization.init_near_unconstrained_zero(
          model_dist, constraining_bijector=bijectors
      )
      samples = self.evaluate(init_dist.sample(10, seed=seed))
      self.assertEqual(3, len(samples))
      for v in samples:
          self.assertAllFinite(v)
      self.assertAllFinite(self.evaluate(model_dist.log_prob(samples)))
  
imports: import tensorflow.compat.v2
  from tensorflow_probability.python.bijectors import exp
  from tensorflow_probability.python.bijectors import identity
  from tensorflow_probability.python.bijectors import pad
  from tensorflow_probability.python.bijectors import sigmoid
  from tensorflow_probability.python.distributions import half_cauchy
  from tensorflow_probability.python.distributions import joint_distribution_auto_batched
  from tensorflow_probability.python.distributions import joint_distribution_coroutine
  from tensorflow_probability.python.distributions import joint_distribution_named
  from tensorflow_probability.python.distributions import joint_distribution_sequential
  from tensorflow_probability.python.distributions import multinomial
  from tensorflow_probability.python.distributions import mvn_diag
  from tensorflow_probability.python.distributions import normal
  from tensorflow_probability.python.distributions import sample
  from tensorflow_probability.python.distributions import uniform
  from tensorflow_probability.python.experimental import distribute
  from tensorflow_probability.python.experimental.mcmc import initialization
  from tensorflow_probability.python.internal import distribute_test_lib
  from tensorflow_probability.python.internal import test_util
label_desc: Use image node_id 2 for calling the InitializationTest obj's underlying member method code with example usage: obj.testUnconstrainedUniformUsageExplicitBijectors() without return types