API Reference > imodeljs-backend > Elements > OnChildElementArg OnChildElementArg Interface Beta Argument for the Element.onChildXxx static methods Extends OnElementArg Properties Name Type Description parentId string Inherited properties Name Type Inherited from Description iModel IModelDb OnElementArg The iModel for the Element affected by this method. Defined in core/backend/src/Element.ts Line 55 Last Updated: 11 June, 2024