code: def get_country_holidays(
      country: str, years: Optional[Union[int, Iterable[int]]] = None
  ):
      """
      Helper function to get holidays for a country.
  
      Parameters
      ----------
          country : str
              Country name to retrieve country specific holidays
          years : int, list
              Year or list of years to retrieve holidays for
  
      Returns
      -------
          set
              All possible holiday dates and names of given country
  
      """
      substitutions = {
          "TU": "TR",  # For compatibility with Turkey as "TU" cases.
      }
  
      country = substitutions.get(country, country)
      if not hasattr(holidays, country):
          raise AttributeError(
              f"Holidays in {country} are not currently supported!"
          )
  
      return getattr(holidays, country)(years=years)
  
label_desc: Use image node_id 1 for calling a global function with example usage: get_country_holidays(country, years) and returns: getattr