API Reference > presentation-common > Hierarchies > NodeKey > NodeKey.isLabelGroupingNodeKey NodeKey.isLabelGroupingNodeKey Function Checks if the supplied key is a LabelGroupingNodeKey isLabelGroupingNodeKey(key: NodeKey): key is LabelGroupingNodeKey Parameter Type Description key NodeKey Returns - key is LabelGroupingNodeKey Defined in presentation/common/src/hierarchy/Key.ts Line 95 Last Updated: 13 June, 2024