public Set<URL> getTargetPageURLs() throws RuntimeException {
		Set<URL> set = new HashSet<URL>();
		String url = config.getUrl();
		if (StringUtils.isNotEmpty(url)) {
			if (url.contains("|")) {
				String[] urlArray = url.split("\\|");
				for (String target : urlArray) {
					target = target.trim();
					if(target!=null && target.length()>0){
						set.add(URL.valueOf(target));
					}
				}
			}
		}
		return set;
	}