code: def test_volumetric(self):
      x = numpy.zeros((100, 224, 224, 3), numpy.float32)
  
      parent_image = Image(x, dimensions=3)
  
      objects = Objects()
  
      objects.parent_image = parent_image
  
      assert objects.volumetric
  
imports: import numpy
  from cellprofiler_core.image import Image
  from cellprofiler_core.object import Objects
label_desc: Use image node_id 2 for calling the TestObjects obj's underlying member method code with example usage: obj.test_volumetric() without return types