code: def test_multiply_black():
      """If you multiply an image with a solid black image,
      the result is black."""
      # Arrange
      im1 = hopper()
      black = Image.new("RGB", im1.size, "black")
  
      # Act
      new = ImageChops.multiply(im1, black)
  
      # Assert
      assert_image_equal(new, black)
  
imports: from PIL import Image, ImageChops
  from .helper import assert_image_equal, hopper
label_desc: Use image node_id 17 for calling a global function with example usage: test_multiply_black() without return types