API Reference > presentation-common > PresentationRules > ContentInstancesOfSpecificClassesSpecification > arePolymorphic arePolymorphic Deprecated Renamed to ContentInstancesOfSpecificClassesSpecification.handleInstancesPolymorphically. Will be removed in iModel.js 3.0 arePolymorphic: undefined | boolean Whether to get content from instances of derived classes. Defined in presentation/common/src/presentation-common/rules/content/ContentInstancesOfSpecificClassesSpecification.ts Line 34 Last Updated: 11 June, 2024