code: def bulkdownload(database, **kwargs):
      
  
      # discourage users from using authtoken
      if 'authtoken' in kwargs:
          raise InvalidRequestError(Message.ERROR_AUTHTOKEN_NOT_SUPPORTED)
  
      ApiKeyUtil.init_api_key_from_args(kwargs)
  
      filename = kwargs.pop('filename', '.')
      return Database(database).bulk_download_to_file(filename, params=kwargs)
docs: Downloads an entire database.
      :param str database: The database code to download
      :param str filename: The filename for the download. \
      If not specified, will download to the current working directory
      :param str api_key: Most databases require api_key for bulk download
      :param str download_type: 'partial' or 'complete'. \
      See: https://www.quandl.com/docs/api#database-metadata