API Reference > ui-components > Tree > SimpleTreeDataProviderHierarchy SimpleTreeDataProviderHierarchy Type alias Used by SimpleTreeDataProvider. key - Parent id. value - Child tree node items. SimpleTreeDataProviderHierarchy = Map<string | undefined, TreeNodeItem[]> Defined in ui/components/src/ui-components/tree/SimpleTreeDataProvider.ts Line 19 Last Updated: 12 June, 2024