'Makes a GET request for a fragment.'

def _fragment_GET_request(self, req, node_iter, partition, policy, header_provider=None):

    backend_headers = self.generate_request_headers(req, additional=req.headers)
    getter = ResumingGetter(self.app, req, 'Object', node_iter, partition, req.swift_entity_path, backend_headers, client_chunk_size=policy.fragment_size, newest=False, header_provider=header_provider)
    return (getter, getter.response_parts_iter(req))
