code: public void decode(AsnInputStream ais) throws ParseException {
  
          try {
              ext.decode(ais);
          } catch (AsnException e) {
              throw new ParseException(PAbortCause.BadlyStructuredDialoguePortion, "AsnException while decoding UserInformationElement: " + e.getMessage(), e);
          }
      }
docs: /*
  (non-Javadoc)
  
  @see org.mobicents.protocols.asn.External#decode(org.mobicents.protocols.asn.AsnInputStream)