"application/vnd.uplanet.cacheop",
				"application/vnd.uplanet.cacheop-wbxml",
				"application/vnd.uplanet.channel",
				"application/vnd.uplanet.channel-wbxml",
				"application/vnd.uplanet.list",
				"application/vnd.uplanet.list-wbxml",
				"application/vnd.uplanet.listcmd",
				"application/vnd.uplanet.listcmd-wbxml",
				"application/vnd.uplanet.signal",
				"application/vnd.vcx",
				"application/vnd.vd-study",

    @Resource
    protected MimeTypeHelper mimeTypeHelper;

    /** The HTTP client instance */
    protected volatile CloseableHttpClient httpClient;

    /** List of request headers to be sent with each request */
    private final List<Header> requestHeaderList = new ArrayList<>();

    /** Map of HTTP client properties */
    private final Map<String, Object> httpClientPropertyMap = new HashMap<>();