code: def testBitcastToSmaller(self):
      pass
  
file_path: tensorflow/tensorflow/compiler/tests/cast_ops_test.py
imports: from tensorflow.compiler.tests import xla_test
  from tensorflow.python.eager import def_function
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import ops
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import math_ops
  from tensorflow.python.ops import random_ops
  from tensorflow.python.ops import control_flow_ops
  from tensorflow.python.ops import image_ops
  from tensorflow.python.ops import io_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 2 for calling the CastOpsTest obj's underlying member method code with example usage: obj.testBitcastToSmaller() without return types