@headless-tree/coreInterfacesTreeStateOn this pageTreeState <T>HierarchyTreeStateType<T>TreeStateIndex PropertiesdndexpandedItemsfocusedItemloadingItemsrenamingItemrenamingValuesearchselectedItemsProperties optionaldnddnd?: null | DndState<T>expandedItemsexpandedItems: string[]focusedItemfocusedItem: null | stringloadingItemsloadingItems: string[]optionalrenamingItemrenamingItem?: null | stringoptionalrenamingValuerenamingValue?: stringsearchsearch: null | stringselectedItemsselectedItems: string[]