code: def get_items(self, container_id, scope=None, item_path=None, metadata=None, format=None, download_file_name=None, include_download_tickets=None, is_shallow=None):
          
          route_values = {}
          if container_id is not None:
              route_values['containerId'] = self._serialize.url('container_id', container_id, 'long')
          query_parameters = {}
          if scope is not None:
              query_parameters['scope'] = self._serialize.query('scope', scope, 'str')
          if item_path is not None:
              query_parameters['itemPath'] = self._serialize.query('item_path', item_path, 'str')
          if metadata is not None:
              query_parameters['metadata'] = self._serialize.query('metadata', metadata, 'bool')
          if format is not None:
              query_parameters['$format'] = self._serialize.query('format', format, 'str')
          if download_file_name is not None:
              query_parameters['downloadFileName'] = self._serialize.query('download_file_name', download_file_name, 'str')
          if include_download_tickets is not None:
              query_parameters['includeDownloadTickets'] = self._serialize.query('include_download_tickets', include_download_tickets, 'bool')
          if is_shallow is not None:
              query_parameters['isShallow'] = self._serialize.query('is_shallow', is_shallow, 'bool')
          response = self._send(http_method='GET',
                                location_id='e4f5c81e-e250-447b-9fef-bd48471bea5e',
                                version='5.0-preview.4',
                                route_values=route_values,
                                query_parameters=query_parameters)
          return self._deserialize('[FileContainerItem]', self._unwrap_collection(response))
docs: GetItems.
          [Preview API]
          :param long container_id:
          :param str scope:
          :param str item_path:
          :param bool metadata:
          :param str format:
          :param str download_file_name:
          :param bool include_download_tickets:
          :param bool is_shallow:
          :rtype: [FileContainerItem]