code: def db_import_xml(self, url=None, force_download=False, taxids=None, silent=False):
          
          log.info('Update UniProt database from {}'.format(url))
  
          self._drop_tables()
          xml_gzipped_file_path, version_file_path = self.download(url, force_download)
          self._create_tables()
          self.import_version(version_file_path)
          self.import_xml(xml_gzipped_file_path, taxids, silent)
          self.session.close()
docs: Updates the CTD database
          
          1. downloads gzipped XML
          2. drops all tables in database
          3. creates all tables in database
          4. import XML
          5. close session
  
          :param Optional[list[int]] taxids: list of NCBI taxonomy identifier
          :param str url: iterable of URL strings
          :param bool force_download: force method to download
          :param bool silent: