parameters: (lang_file)
docstring: Closes a <lang>.json file created with _create_lang_file().
  
      This also writes the terminating left brace and newline.
  
      Args:
          lang_file: A file opened with _create_lang_file().
  
      Raises:
          IOError: An error occurred while writing to or closing the file.
docstring_summary: Closes a <lang>.json file created with _create_lang_file().
docstring_tokens: Closes a <lang > . json file created with _create_lang_file () .
function: def _close_lang_file(lang_file):
      """Closes a <lang>.json file created with _create_lang_file().
  
      This also writes the terminating left brace and newline.
  
      Args:
          lang_file: A file opened with _create_lang_file().
  
      Raises:
          IOError: An error occurred while writing to or closing the file.
      """
      lang_file.write('\n}\n')
      lang_file.close()
function_tokens: def _close_lang_file ( lang_file ) : lang_file . write ( '\n}\n' ) lang_file . close ( )