code: def morphologicalskeleton(image, volumetric):
      if volumetric:
          return morphological_skeleton_3d(image)
      else:
          return morphological_skeleton_2d(image)
  
label_desc: Use image node_id 1 for calling a global function with example usage: morphologicalskeleton(image, volumetric) and returns: morphological_skeleton_3d, morphological_skeleton_2d