code: def require_flax(test_case):
      """
      Decorator marking a test that requires JAX & Flax. These tests are skipped when one / both are not installed
      """
      return unittest.skipUnless(
          is_flax_available(), "test requires JAX & Flax"
      )(test_case)
  
imports: import functools
  import importlib
  import inspect
  import io
  import logging
  import multiprocessing
  import os
  import random
  import re
  import struct
  import sys
  import tempfile
  import time
  import unittest
  import urllib.parse
  from contextlib import contextmanager
  from distutils.util import strtobool
  from io import BytesIO, StringIO
  from pathlib import Path
  from typing import List, Optional, Union
  import numpy
  import PIL.Image
  import PIL.ImageOps
  import requests
  from numpy.linalg import norm
  from packaging import version
  from .import_utils import BACKENDS_MAPPING, is_compel_available, is_flax_available, is_note_seq_available, is_onnx_available, is_opencv_available, is_peft_available, is_torch_available, is_torch_version, is_torchsde_available, is_transformers_available
  from .logging import get_logger
label_desc: Use image node_id 13 for calling a global function with example usage: require_flax(test_case) and returns: unittest