code: def test_masked(self):
      x = numpy.zeros((224, 224, 3), numpy.float32)
  
      mask = numpy.ones((224, 224), bool)
  
      parent_image = Image(x, mask=mask)
  
      objects = Objects()
  
      objects.segmented = mask
  
      objects.parent_image = parent_image
  
      numpy.testing.assert_array_equal(objects.masked, mask)
  
imports: import numpy
  from cellprofiler_core.image import Image
  from cellprofiler_core.object import Objects
label_desc: Use image node_id 3 for calling the TestObjects obj's underlying member method code with example usage: obj.test_masked() without return types