code: def test___init__(self):
      # check parameters
      aug = iaa.FastSnowyLandscape(
          lightness_threshold=[100, 200],
          lightness_multiplier=[1.0, 4.0],
      )
      assert is_parameter_instance(aug.lightness_threshold, iap.Choice)
      assert len(aug.lightness_threshold.a) == 2
      assert aug.lightness_threshold.a[0] == 100
      assert aug.lightness_threshold.a[1] == 200
  
      assert is_parameter_instance(aug.lightness_multiplier, iap.Choice)
      assert len(aug.lightness_multiplier.a) == 2
      assert np.allclose(aug.lightness_multiplier.a[0], 1.0)
      assert np.allclose(aug.lightness_multiplier.a[1], 4.0)
  
imports: from __future__ import print_function, division, absolute_import
  import sys
  import numpy
  import cv2
  import imgaug
  from imgaug import augmenters
  from imgaug import parameters
  from imgaug.testutils import reseed, runtest_pickleable_uint8_img, is_parameter_instance
label_desc: Use image node_id 2 for calling the TestFastSnowyLandscape obj's underlying member method code with example usage: obj.test___init__() without return types