code: def getSubExpDir():
      global subExpDir
      return subExpDir
  
file_path: nupic-legacy/src/nupic/frameworks/opf/exp_description_helpers.py
imports: import os
  import imp
  from nupic.data.dict_utils import rUpdate
label_desc: Use image node_id 3 for calling a global function with example usage: getSubExpDir() and returns: subExpDir