code: def volumetric(self):
      return True
  
imports: import numpy
  import scipy.ndimage
  import skimage.segmentation
  import skimage.util
  from cellprofiler_core.module import Module
  from cellprofiler_core.setting.subscriber import ImageSubscriber
label_desc: Use image node_id 12 for calling the MeasureImageSkeleton obj's underlying member method code with example usage: obj.volumetric() and returns: True