code: def test_update_dict_with_prefix_kv(dest, prefix_kv, expected):
      utils.update_dict_with_prefix_kv(dest, prefix_kv)
      assert dest == expected
  
imports: import gzip
  import math
  import os
  import re
  from tempfile import TemporaryDirectory
  import unittest
  import numpy
  import pytest
  import torch
  from sockeye import __version__
  from sockeye import constants
  from sockeye import utils
label_desc: Use image node_id 24 for calling a global function with example usage: test_update_dict_with_prefix_kv(dest, prefix_kv, expected) without return types