API Reference > presentation-common > PresentationRules > ChildNodeSpecificationBase > hideNodesInHierarchy hideNodesInHierarchy hideNodesInHierarchy: undefined | boolean When true, instances nodes produced by this specification are omitted and their children appear one hierarchy level higher. Defined in presentation/common/src/presentation-common/rules/hierarchy/ChildNodeSpecification.ts Line 58 Last Updated: 20 June, 2023