code: def is_calibrated(self):
      return False
  
file_path: probability/tensorflow_probability/python/experimental/mcmc/sharded_test.py
imports: import tensorflow.compat.v2
  from tensorflow_probability.python.experimental.mcmc import sharded
  from tensorflow_probability.python.internal import distribute_test_lib
  from tensorflow_probability.python.internal import samplers
  from tensorflow_probability.python.internal import test_util
  from tensorflow_probability.python.mcmc import kernel
label_desc: Use image node_id 1 for calling the RandomWalk obj's underlying member method code with example usage: obj.is_calibrated() and returns: False