.getConfigurationElementsFor(CHATROOM_COMMAND_HANDLER_EPOINT);
for (int i = 0; i < elements.length; i++) {
String id = elements[i].getAttribute(CHATROOMROBOTID_ATT);
String expression = elements[i]
.getAttribute(FILTEREXPRESSION_ATT);
IChatRoomMessageHandler handler = (IChatRoomMessageHandler) elements[i]
.createExecutableExtension(CLASS_ATT);
List c = (List) chatbotcommands.get(id);
if (c == null) {
c = new ArrayList();
c.add(new ChatRoomMessageHandlerEntry(expression, handler));