// eventually...
ProcessId processId = ProcessId.newProcessId();
backlogItem.startDiscussionInitiation(processId.id());
// eventually...
backlogItem.initiateDiscussion(new DiscussionDescriptor("CollabDiscussion45678"));
expectedEvents(4);
expectedEvent(BacklogItemDiscussionInitiated.class);
assertEquals(processId.id(), backlogItem.discussionInitiationId());