code: def __structuring_element(self, radius, volumetric):
      if volumetric:
          return skimage.morphology.ball(radius)
  
      return skimage.morphology.disk(radius)
  
imports: import centrosome.filter
  import numpy
  import scipy.ndimage
  import skimage.exposure
  import skimage.filters
  import skimage.morphology
  import skimage.transform
  from cellprofiler_core.image import Image
  from cellprofiler_core.module import ImageProcessing
  from cellprofiler_core.setting import Binary
  from cellprofiler_core.setting.choice import Choice
  from cellprofiler_core.setting.range import IntegerRange
  from cellprofiler_core.setting.text import Float
  from cellprofiler_core.setting.text import Integer
  from cellprofiler.modules import _help
label_desc: Use image node_id 7 for calling the EnhanceOrSuppressFeatures obj's underlying member method code with example usage: obj.__structuring_element(radius, volumetric) and returns: skimage, skimage