code: def get_supported_locales() -> Iterable[str]:
      """Returns a list of all the supported locale codes."""
      return _supported_locales
  
imports: import codecs
  import csv
  import datetime
  import gettext
  import glob
  import os
  import re
  from tornado import escape
  from tornado.log import gen_log
  from tornado._locale_data import LOCALE_NAMES
  from typing import Iterable, Any, Union, Dict, Optional
label_desc: Use image node_id 5 for calling a global function with example usage: get_supported_locales() and returns: _supported_locales