code: public static String getFormattedTagAndLength(final byte[] data, final int indentLength) {
  		StringBuilder buf = new StringBuilder();
  		String indent = getSpaces(indentLength);
  		TLVInputStream stream = new TLVInputStream(new ByteArrayInputStream(data));
  
  		boolean firstLine = true;
  		try {
  			while (stream.available() > 0) {
  				if (firstLine) {
  					firstLine = false;
  				} else {
  					buf.append("\n");
  				}
  				buf.append(indent);
  
  				ITag tag = searchTagById(stream.readTag());
  				int length = stream.readLength();
  
  				buf.append(prettyPrintHex(tag.getTagBytes()));
  				buf.append(" ");
  				buf.append(String.format("%02x", length));
  				buf.append(" -- ");
  				buf.append(tag.getName());
  			}
  		} catch (IOException e) {
  			LOGGER.error(e.getMessage(), e);
  		} finally {
  			IOUtils.closeQuietly(stream);
  		}
  		return buf.toString();
  	}
docs: This is just a list of Tag And Lengths (eg DOLs)