code: def unicode_normalizer_from_str(normalizer: str) -> Normalizer:
      if normalizer not in NORMALIZERS:
          raise ValueError(
              "{} is not a known unicode normalizer. Available are {}".format(
                  normalizer, NORMALIZERS.keys()
              )
          )
  
      return NORMALIZERS[normalizer]()
  
label_desc: Use image node_id 1 for calling a global function with example usage: unicode_normalizer_from_str(normalizer) and returns: NORMALIZERS