I have a case where I need to be able to set last children in indeterminate state.
Yes, the indeterminate checkbox state for the node that has no children.
Is it possible without any special hacks?
I don't want to create my own checkboxes in templates, as I still need selecting parent.
I'm already trying to do this with reflections and getting to ProcessedData (with some successes), but I'd prefer to use native functionality.