CaptionPanel cptnpnlNotificationTopics = new CaptionPanel("Notification topics");
flexTable.setWidget(0, 1, cptnpnlNotificationTopics);
cptnpnlNotificationTopics.setSize("", "");
TopicListWidget topicListWidget = new TopicListWidget();
cptnpnlNotificationTopics.setContentWidget(topicListWidget);
topicListWidget.setSize("7cm", "8cm");
MessageListWidget messageListWidget = new MessageListWidget();
decoratedTabPanel_1.add(messageListWidget, "Messages", false);
messageListWidget.setSize("10cm", "20cm");