code: def testUnknownShape(self):
      logits = tf.Variable(
          np.zeros((1, 5)), shape=tf.TensorShape((1, None))
      )
      d = relaxed_bernoulli.RelaxedBernoulli(
          0.5, logits, validate_args=True
      )
      self.evaluate(logits.initializer)
      d.sample(seed=test_util.test_seed())
  
      if not tf.executing_eagerly():
          logits = tf1.placeholder(tf.float32, shape=(1, None))
          d = relaxed_bernoulli.RelaxedBernoulli(
              0.5, logits=logits, validate_args=True
          )
          d.sample(seed=test_util.test_seed())
  
imports: import numpy
  import scipy.special
  import tensorflow.compat.v1
  import tensorflow.compat.v2
  from tensorflow_probability.python.distributions import relaxed_bernoulli
  from tensorflow_probability.python.internal import tensorshape_util
  from tensorflow_probability.python.internal import test_util
label_desc: Use image node_id 15 for calling the RelaxedBernoulliTest obj's underlying member method code with example usage: obj.testUnknownShape() without return types