// setObject should handle various inputs
        try {
            WebApiUtil.setObject("validKey", "validValue");
            WebApiUtil.setObject("", "emptyKey");
            WebApiUtil.setObject("nullValue", null);
            WebApiUtil.setObject(null, "nullKey");
            WebApiUtil.setObject(null, null);
        } catch (Exception e) {

        }
    }

    @Test
    public void test_toSlackMessage_withBasicContent() {
        MockSMailPostingDiscloser discloser = new MockSMailPostingDiscloser();
        discloser.setSubject("Test Subject");
        discloser.setPlainText("Test Content");

        String result = notificationHelper.toSlackMessage(discloser);

        assertNotNull(result);

        try {
            final GetObjectRequest request = GetObjectRequest.builder().bucket(bucket).key(objectName).build();
            try (InputStream in = s3Client.getObject(request)) {
                in.transferTo(outputStream);
            }
        } catch (final Exception e) {
            throw new StorageException("Failed to download " + objectName, e);
        }
    }