API Reference > presentation-common > Hierarchies Hierarchies Types related to presentation hierarchies. Enumerations Name Description StandardNodeTypes Standard node types Interfaces Name Description BaseNodeKey Data structure that describes a basic node key ECClassGroupingNodeKey Data structure that describes an ECClass grouping node key ECInstancesNodeKey Data structure that describes a node ECInstance node key ECInstancesNodeKeyJSON Serialized ECInstancesNodeKey JSON representation. ECPropertyGroupingNodeKey Data structure that describes an ECProperty grouping node key GroupingNodeKey Data structure that describes a grouping node key LabelCompositeValueJSON JSON representation of LabelCompositeValueJSON.LabelCompositeValue LabelDefinitionJSON JSON representation of LabelDefinitionJSON.LabelDefinition LabelGroupingNodeKey Data structure that describes a display label grouping node key NodeJSON Serialized NodeJSON.Node JSON representation. NodePathElementJSON Serialized NodePathElementJSON.NodePathElement JSON representation. NodePathFilteringDataJSON Serialized NodePathFilteringDataJSON.NodePathFilteringData JSON representation. Namespaces Name Description LabelCompositeValue LabelDefinition Node NodeKey NodePathElement NodePathFilteringData Type Aliases Name Description LabelRawValue Type definition of label raw value. LabelRawValueJSON JSON representation of LabelRawValue NodeKeyJSON One of the serialized node key types NodeKeyPath Node key path. PartialNode Partial node definition. PartialNodeJSON Serialized PartialNode JSON representation. Last Updated: 15 June, 2021