code: def stitch_values(values_and_indices_list):
      """Stitch values together according to their indices.
  
      Args:
        values_and_indices_list: a list of tuples of values and indices indicating
          the values and positions in the returned list.
  
      Returns:
        a stitched list of values.
      """
      length = 0
      for values_and_indices in values_and_indices_list:
          length += len(values_and_indices[0])
  
      result = [None] * length
      for values_and_indices in values_and_indices_list:
          if values_and_indices and values_and_indices[0]:
              for v, i in zip(*values_and_indices):
                  assert result[i] is None
                  result[i] = v
      return result
  
imports: import copy
  import threading
  from typing import Callable, List, Optional, Union
  from tensorflow.python.distribute import collective_util
  from tensorflow.python.distribute import values
  from tensorflow.python.eager import backprop_util
  from tensorflow.python.eager import context
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import indexed_slices
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import tensor_spec
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import collective_ops
  from tensorflow.python.ops import cond
  from tensorflow.python.ops import math_ops
  from tensorflow.python.ops import nccl_ops
  from tensorflow.python.ops import resource_variable_ops
  from tensorflow.python.platform import tf_logging
  from tensorflow.python.types import core
label_desc: Use image node_id 9 for calling a global function with example usage: stitch_values(values_and_indices_list) and returns: result