API Reference > presentation-common > PresentationRules > DEPRECATED_RelatedPropertiesSpecification > isPolymorphic isPolymorphic Deprecated Use DEPRECATED_RelatedPropertiesSpecification.handleTargetClassPolymorphically. isPolymorphic: undefined | boolean Should DEPRECATED_RelatedPropertiesSpecification.relationships and DEPRECATED_RelatedPropertiesSpecification.relatedClasses be handled polymorphically. Defined in presentation/common/src/presentation-common/rules/content/modifiers/RelatedPropertiesSpecification.ts Line 85 Last Updated: 29 November, 2022