}

    /**
     * Gets the exception that occurred while accessing the content, if any.
     *
     * @return the exception, or null if no exception occurred.
     */
    public Exception getContentException() {
        return contentException;
    }

    /**
     * Sets the headers for the response.
     *
     * @param headers the headers to set.
     */

        CurlResponse response = new CurlResponse();
        Exception exception = new IOException("Test exception");

        response.setContentException(exception);

        assertSame(exception, response.getContentException());
    }

    @Test
    public void testHeaders() {
        CurlResponse response = new CurlResponse();
        Map<String, List<String>> headers = new HashMap<>();

                        logger.info("Register {} to {}", path, index);
                    } else if (response.getContentException() != null) {
                        logger.warn("Invalid request for {}.", path, response.getContentException());
                    } else {
                        logger.warn("Invalid request for {}. The response is {}", path, response.getContentAsString());