return getSingleHeader("Content-Transfer-Encoding");
String encoding = getSingleHeader("Content-Transfer-Encoding"); if (encoding != null) {   HeaderTokenizer tokenizer = new HeaderTokenizer(encoding, HeaderTokenizer.MIME);  Token token = tokenizer.next(); while (token.getType() != Token.EOF) {  if (token.getType() == Token.ATOM) { return token.getValue(); } }   return encoding; }  return null;
    public String getEncoding() throws MessagingException {        return getSingleHeader("Content-Transfer-Encoding");    }