code: def test_equalize(self):
      # test case when no translation is called (prob=0)
      transform = Equalize(prob=0.0)
      results_wo_equalize = transform(copy.deepcopy(self.results_mask))
      check_result_same(
          self.results_mask, results_wo_equalize, self.check_keys
      )
      # test case when translation is called
      transform = Equalize(prob=1.0)
      transform(copy.deepcopy(self.results_mask))
  
imports: import copy
  import unittest
  from mmdet.datasets.transforms import AutoContrast, Brightness, Color, ColorTransform, Contrast, Equalize, Invert, Posterize, Sharpness, Solarize, SolarizeAdd
  from .utils import check_result_same, construct_toy_data
label_desc: Use image node_id 2 for calling the TestEqualize obj's underlying member method code with example usage: obj.test_equalize() without return types