code: def _check_quantized(values):
      # Cannot rely on `nest` because the leaves are tuples.
      if not isinstance(values, (list, tuple)):
          _check_failed(values)
      if isinstance(values, tuple):
          _ = [_check_int(v) for v in values]
      else:
          _ = [_check_quantized(v) for v in values]
  
imports: import typing
  from typing import Protocol
  import numpy
  from tensorflow.core.framework import tensor_pb2
  from tensorflow.core.framework import tensor_shape_pb2
  from tensorflow.python.client import pywrap_tf_session
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import errors_impl
  from tensorflow.python.framework import tensor_shape
  from tensorflow.python.types import core
  from tensorflow.python.types import internal
  from tensorflow.python.util import compat
  from tensorflow.python.util import nest
  from tensorflow.python.util.tf_export import tf_export
label_desc: Use image node_id 19 for calling a global function with example usage: _check_quantized(values) without return types