docs: public static BufferedReader getReader(InputStream in, Charset charset) {
  		if (null == in) {
  			return null;
  		}
  
  		InputStreamReader reader = null;
  		if (null == charset) {
  			reader = new InputStreamReader(in);
  		} else {
  			reader = new InputStreamReader(in, charset);
  		}
  
  		return new BufferedReader(reader);
  	}