code: public byte[] sendSubmitSmResp(OutputStream os, int sequenceNumber,
              String messageId) throws PDUStringException, IOException {
          return pduSender.sendSubmitSmResp(os, sequenceNumber, messageId);
      }
docs: /*
  (non-Javadoc)
  
  @see org.jsmpp.PDUSender#sendSubmitSmResp(java.io.OutputStream, int,
  java.lang.String)