hi there,
Maybe this is the dumbiest question of the day but, there are allways children allowed for Tree or TreeGrid in vaadin 8? As there was a method in vaadin7 which you can easily setChildrenAllowed(false/true), in vaadin8 I had not find any way to make it. Did I miss something? Maybe there is a new method in the TreeData or in the HierarchicalDataProvider?
Thx for the help.