code: def _random_rvs(self, shape):
      return self._rng.multinomial(1, *shape)
  
imports: import itertools
  from absl.testing import parameterized
  import numpy
  import tensorflow.compat.v2
  from tensorflow_probability.python.bijectors import ascending
  from tensorflow_probability.python.distributions import kullback_leibler
  from tensorflow_probability.python.distributions import stopping_ratio_logistic
  from tensorflow_probability.python.internal import test_util
label_desc: Use image node_id 3 for calling the StoppingRatioLogisticTest obj's underlying member method code with example usage: obj._random_rvs(shape) and returns: self