API Reference > presentation-common > PresentationRules > MultiSchemaClassesSpecification > classNames classNames classNames: string[] List of ECClass names. Each class name may be prefixed with: E: to exclude class from results PE: to exclude class and all its sublasses from results So generally the list may contain ["base_class_name", "PE:derived_class_name"] to include all instances of base_class_name except all polymorphic instances of derived_class_name. pattern ^(E:|PE:)?[\w\d]+$ Defined in presentation/common/src/presentation-common/rules/ClassSpecifications.ts Line 55 Last Updated: 11 June, 2024