code: def test_slicing(self):
      assert type(self.images[:]) is ImageCollection
      assert len(self.images[:]) == 2
      assert len(self.images[:1]) == 1
      assert len(self.images[1:]) == 1
      assert_allclose(self.images[0], self.images[:1][0])
      assert_allclose(self.images[1], self.images[1:][0])
      assert_allclose(self.images[1], self.images[::-1][0])
      assert_allclose(self.images[0], self.images[::-1][1])
  
imports: import os
  import itertools
  import numpy
  import imageio.v3
  from skimage import data_dir
  from skimage.io.collection import ImageCollection, MultiImage, alphanumeric_key
  from skimage.io import reset_plugins
  from skimage._shared import testing
  from skimage._shared.testing import assert_equal, assert_allclose, fetch
  import pytest
label_desc: Use image node_id 4 for calling the TestImageCollection obj's underlying member method code with example usage: obj.test_slicing() without return types