TUI TREE - How to make an async load of a starting node?

[Makavto]

In docs you have an example of async tree. There is a TUI_TREE_START InjectionToken that has value. But how can I make an async load of this TUI_TREE_START?
I've tried an async function in useFactory and it didn't work.
I also tried to get value via APP_INITIALIZER provider but TUI_TREE_START provider did not wait for the end of APP_INITIALIZER useFactory function.

[waterplea]

TUI_TREE_START is only requested in TuiTreeService, you can hide whatever injects TuiTreeService behind ngIf until you receive all the data you need.