1. 2. 3. 4. BPEL Java Java void subscribe(MailingList ml, String userEmailAddress) { sendConfirmationEmail(userEmailAddress); try { msg = waitForResponse(); if(validateMessage(msg)) ml.add(userEmailAddress); } catch( TimeoutException e ) { // abort } } waitForResponse Java waitForResponse 1. (continuation) Java javaflow 2. dalma engine 3. dalma engine endpoint 4. dalmacon 5. dalmacon dalma webui 6