Hi, I'm trying to find an example of a ComboBoxTree in GXT. Basically I want what is discussed in this ExtJS thread:

https://extjs.com/forum/showthread.php?t=27269

Does any one know of one?
Any pointers on how to implement one?

I've been looking at the internals of ComboBox and it is all based around a ListView which has no relationship to Tree. Maybe some one has created a TreeListView or something similar?

Thanks in advance for any pointers.