API Reference > presentation-common > Core > ExtendedHierarchyRequestOptions ExtendedHierarchyRequestOptions<TIModel, TNodeKey, TRulesetVariable> Interface Request type for hierarchy requests Extends RequestOptionsWithRuleset<TIModel, TRulesetVariable> Properties Name Type Description parentKey undefined | TNodeKey Key of the parent node to get children for Inherited properties Name Type Inherited from Description diagnostics undefined | RequestOptionsWithRuleset<TIModel, TRulesetVariable> imodel TIModel RequestOptionsWithRuleset<TIModel, TRulesetVariable> iModel to request data from locale undefined | string RequestOptionsWithRuleset<TIModel, TRulesetVariable> Optional locale to use when formatting / localizing data priority undefined | number RequestOptionsWithRuleset<TIModel, TRulesetVariable> Optional request priority. rulesetOrId string | Ruleset RequestOptionsWithRuleset<TIModel, TRulesetVariable> Ruleset or id of the ruleset to use when requesting data rulesetVariables undefined | TRulesetVariable[] RequestOptionsWithRuleset<TIModel, TRulesetVariable> Ruleset variables to use when requesting data unitSystem undefined | PresentationUnitSystem RequestOptionsWithRuleset<TIModel, TRulesetVariable> Unit system to use when formatting property values with units. Defined in presentation/common/src/presentation-common/PresentationManagerOptions.ts Line 98 Last Updated: 29 November, 2022