code: def Saturation_setup():
      tforms = {}
      tforms["saturation_=-1"] = Saturation(-1)
      tforms["saturation_<0"] = Saturation(-0.5)
      tforms["saturation_=0"] = Saturation(0)
      tforms["saturation_>0"] = Saturation(0.5)
      tforms["saturation_=1"] = Saturation(1)
  
      tforms["random_saturation_01"] = RandomSaturation(-1, -0.5)
      tforms["random_saturation_02"] = RandomSaturation(-0.5, 0)
      tforms["random_saturation_03"] = RandomSaturation(0, 0.5)
      tforms["random_saturation_04"] = RandomSaturation(0.5, 1)
  
      tforms["random_choice_saturation_01"] = RandomChoiceSaturation(
          [-1, 0, 1]
      )
      tforms["random_choice_saturation_02"] = RandomChoiceSaturation(
          [-1, 0, 1], p=[0.2, 0.5, 0.3]
      )
      tforms["random_choice_saturation_03"] = RandomChoiceSaturation(
          [0, 0, 0, 0], p=[0.25, 0.5, 0.25, 0.25]
      )
  
      return tforms
  
file_path: pywick/tests/unit/transforms/test_image_transforms.py
imports: import torch
  from pywick.transforms import Grayscale, RandomGrayscale, Gamma, RandomGamma, RandomChoiceGamma, Brightness, RandomBrightness, RandomChoiceBrightness, Saturation, RandomSaturation, RandomChoiceSaturation, Contrast, RandomContrast, RandomChoiceContrast
label_desc: Use image node_id 8 for calling a global function with example usage: Saturation_setup() and returns: tforms