code: def get_categories(self, pipeline, object_name):
      if object_name == "Image":
          return ["Skeleton"]
  
      return []
  
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 5 for calling the MeasureImageSkeleton obj's underlying member method code with example usage: obj.get_categories(pipeline, object_name) and returns: list, list