docs: def update(connection=None, urls=None, force_download=False):
      """Updates CTD database
  
      :param iter[str] urls: list of urls to download
      :param str connection: custom database connection string
      :param bool force_download: force method to download
      """
      db = DbManager(connection)
      db.db_import(urls=urls, force_download=force_download)
      db.session.close()