@headless-tree/coreInterfacesTreeStateOn this pageTreeState <T>HierarchyTreeStateType<T>TreeStateIndex PropertiesassistiveDndStatedndexpandedItemsfocusedItemloadingItemChildrensloadingItemDatarenamingItemrenamingValuesearchselectedItemsProperties optionalassistiveDndStateassistiveDndState?: null | AssistiveDndStateoptionaldnddnd?: null | DndState<T>expandedItemsexpandedItems: string[]focusedItemfocusedItem: null | stringloadingItemChildrensloadingItemChildrens: string[]loadingItemDataloadingItemData: string[]optionalrenamingItemrenamingItem?: null | stringoptionalrenamingValuerenamingValue?: stringsearchsearch: null | stringselectedItemsselectedItems: string[]