code: def make(cls, language=None, extlangs=None, script=None,
               region=None, variants=None, extensions=None, private=None):
          
          values = (language, tuple(extlangs or ()), script, region,
                    tuple(variants or ()), tuple(extensions or ()), private)
          if values in cls._INSTANCES:
              return cls._INSTANCES[values]
  
          instance = cls(
              language=language, extlangs=extlangs,
              script=script, region=region, variants=variants,
              extensions=extensions, private=private
          )
          cls._INSTANCES[values] = instance
          return instance
docs: Create a Language object by giving any subset of its attributes.
  
          If this value has been created before, return the existing value.