API Reference > presentation-common > Hierarchies > ECClassGroupingNodeKey ECClassGroupingNodeKey Interface Data structure that describes an ECClass grouping node key Extends GroupingNodeKey Properties Name Type Description className string Full name of the grouping ECClass type ECClassGroupingNode Node type Inherited properties Name Type Inherited from Description groupedInstancesCount number GroupingNodeKey Get the number of instances grouped by the node represented pathFromRoot string[] GroupingNodeKey Node hash path from root to the node whose key this is Defined in presentation/common/src/presentation-common/hierarchy/Key.ts Line 124 Last Updated: 11 June, 2024