The princess felt sad and did not like to sleep. Then she became tabid.

公主很痛苦，她睡不着觉，人也变得憔悴。

'''updateTab(...)''' takes an additional tabId, which it uses to check if the tab already exists in the TabPanel.

+ 函数'''updateTab(...)''' 需要多个tabId的参数，以便能检测这个tab是存在。