code: def get_mirror_url(original):
      return SCHEME_PATTERN.sub(FLAGS.mirror, original)
  
file_path: tensorboard/tensorboard/tools/import_google_fonts.py
imports: import hashlib
  import httplib
  import os
  import re
  import sys
  import urlparse
  from absl import app
  from absl import flags
label_desc: Use image node_id 3 for calling a global function with example usage: get_mirror_url(original) and returns: SCHEME_PATTERN