code: def test_return_class():
      testing.assert_equal(
          type(imread(fetch("data/color.png"))), np.ndarray
      )
  
file_path: scikit-image/skimage/io/tests/test_imageio.py
imports: from tempfile import NamedTemporaryFile
  import numpy
  from skimage.io import imread, imsave, plugin_order
  from skimage._shared import testing
  from skimage._shared.testing import fetch
  import pytest
label_desc: Use image node_id 5 for calling a global function with example usage: test_return_class() without return types