code: def getNumbaFunctions():
      if getConfigOption("useNumba"):
          try:
              import numba  # noqa
          except ImportError:
              warn(
                  "numba library could not be loaded, but 'useNumba' is set."
              )
              return None
  
          from .. import functions_numba
  
          return functions_numba
      else:
          return None
  
label_desc: Use image node_id 1 for calling a global function with example usage: getNumbaFunctions() and returns: functions_numba, None, None