class_docstr: Class to store the anat array in cache, to avoid reloading it
  each time.
code: def get_blurred(cls):
      if cls.blurred is not None:
          return cls.blurred
      anat, _, _ = cls.get_anat()
      cls.blurred = ndimage.gaussian_filter(
          (
              ndimage.morphology.binary_fill_holes(
                  ndimage.gaussian_filter(
                      (anat > 4800).astype(np.float64), 6
                  )
                  > 0.5
              )
          ).astype(np.float64),
          2,
      ).T.ravel()
      return cls.blurred
  
file_path: nipy/nipy/labs/viz_tools/anat_cache.py
imports: import os
  import numpy
  from nibabel import load
  from scipy import ndimage
  from nipy.io.nibcompat import get_affine
label_desc: Use image node_id 2 for calling the _AnatCache obj's underlying member method code with example usage: obj.get_blurred(cls) and returns: cls, cls