code: def volumetric(self):
      return True
  
imports: import skimage.morphology
  from cellprofiler_core.image import Image
  from cellprofiler_core.module import ImageProcessing
  from cellprofiler_library.modules import morphologicalskeleton
label_desc: Use image node_id 1 for calling the MorphologicalSkeleton obj's underlying member method code with example usage: obj.volumetric() and returns: True