code: def get_iex_listed_symbol_dir(start=None, **kwargs):
      
      import warnings
      warnings.warn(WNG_MSG % ("get_iex_listed_symbol_dir",
                               "refdata.get_iex_listed_symbol_dir"))
      return ListedSymbolDir(start=start, **kwargs)
docs: MOVED to iexfinance.refdata.get_listed_symbol_dir