Get a list of DownloadRequests for all data that are under the given field in the table of a Geopedia layer.

        :return: list of items which have to be downloaded
        :rtype: list(DownloadRequest)

def get_request(self, request):
        """Get a list of DownloadRequests for all data that are under the given field in the table of a Geopedia layer.

        :return: list of items which have to be downloaded
        :rtype: list(DownloadRequest)
        """
        return [DownloadRequest(url=self._get_url(item),
                                filename=self._get_filename(request, item),
                                data_type=request.image_format)
                for item in self._get_items(request)]