restoreWindowContainer
Restore a WindowContainer by id and optional tag, can only be used when there is a stage open.
Return
return true if succeed,else false.
Parameters
id
Id of window container that you want to close
tag
When tag is null, all the opened window container with the same id will be restored. When is set, only the window with the same id and tag will be restored.
Restore the current WindowContainer, can only be used when there is a stage open
Return
return true if succeed,else false.