API Reference > presentation-common > PresentationRules > InstanceLabelOverridePropertyValueSpecification > propertySource propertySource Beta propertySource: undefined | RelationshipPathSpecification Path from InstanceLabelOverride.class to the property class. If omitted, InstanceLabelOverride.class is used as property class. Defined in presentation/common/src/presentation-common/rules/customization/InstanceLabelOverride.ts Line 101 Last Updated: 12 June, 2024