code: def get_lang_class(lang):
      
      global LANGUAGES
      # Check if an entry point is exposed for the language code
      entry_point = get_entry_point("spacy_languages", lang)
      if entry_point is not None:
          LANGUAGES[lang] = entry_point
          return entry_point
      if lang not in LANGUAGES:
          try:
              module = importlib.import_module(".lang.%s" % lang, "spacy")
          except ImportError as err:
              raise ImportError(Errors.E048.format(lang=lang, err=err))
          LANGUAGES[lang] = getattr(module, module.__all__[0])
      return LANGUAGES[lang]
docs: Import and load a Language class.
  
      lang (unicode): Two-letter language code, e.g. 'en'.
      RETURNS (Language): Language class.