public Map<String, Object> downloadPayload(String path) {
        InputStream inputStream = download(path);
        if (inputStream != null) {
            try {
                Map<String, Object> largePayload = objectMapper.readValue(inputStream, Map.class);
                return largePayload;
            } catch (IOException e) {
                LOGGER.error("Error in downloading payload for path {}", path, e);
            }
        }
        return new HashMap<>();
    }
A {@link ExternalPayloadStorage} implementation that stores payload in file.
test-harness/src/test/java/com/netflix/conductor/test/utils/MockExternalPayloadStorage.java