code: def setUp(self):
      if not os.path.exists(self.TEST_DIR):
          os.makedirs(self.TEST_DIR)
  
imports: import os
  import sys
  import unittest
  from uuid import uuid4
  import matplotlib
  import numpy
  from matplotlib import pyplot
  from PIL import Image
  from neptune.common.utils import IS_MACOS, IS_WINDOWS
  from neptune.legacy.internal.utils.image import _get_figure_as_image, _get_pil_image_data, get_image_content
label_desc: Use image node_id 1 for calling the TestImage obj's underlying member method code with example usage: obj.setUp() without return types