docs: public static String readString(URL url, String charset) throws IORuntimeException {
  		if (url == null) {
  			throw new NullPointerException("Empty url provided!");
  		}
  
  		InputStream in = null;
  		try {
  			in = url.openStream();
  			return IoUtil.read(in, charset);
  		} catch (IOException e) {
  			throw new IORuntimeException(e);
  		} finally {
  			IoUtil.close(in);
  		}
  	}