code: public void updateChangeLog(final Principal user, final Verb verb, final String linkType, final String linkId, final String object, final Direction direction) {
  
  		if (Settings.ChangelogEnabled.getValue()) {
  
  			final JsonObject obj = new JsonObject();
  
  			obj.add("time",     toElement(System.currentTimeMillis()));
  			obj.add("userId",   toElement(user.getUuid()));
  			obj.add("userName", toElement(user.getName()));
  			obj.add("verb",     toElement(verb));
  			obj.add("rel",      toElement(linkType));
  			obj.add("relId",    toElement(linkId));
  			obj.add("relDir",   toElement(direction));
  			obj.add("target",   toElement(object));
  
  			changeLog.append(obj.toString());
  			changeLog.append("\n");
  		}
  	}
docs: Update *node* changelog for Verb.link