code: def _normalize_namescope(namescope):
      if namescope and namescope[-1] != scope._NAMESCOPE_SEPARATOR:
          return namescope + scope._NAMESCOPE_SEPARATOR
      else:
          return namescope
  
file_path: pytorch/caffe2/python/modeling/parameter_sharing.py
imports: from caffe2.python import scope
  import contextlib
  import logging
label_desc: Use image node_id 1 for calling a global function with example usage: _normalize_namescope(namescope) and returns: unknown, namescope