API Reference > imodeljs-backend > iModels > IModelTransformer > onTransformElementAspect onTransformElementAspect MethodProtected Transform the specified sourceElementAspect into ElementAspectProps for the target iModel. onTransformElementAspect(sourceElementAspect: ElementAspect, targetElementId: Id64String): ElementAspectProps note A subclass can override this method to provide custom transform behavior. Parameter Type Description sourceElementAspect ElementAspect The ElementAspect from the source iModel to be transformed. targetElementId Id64String The ElementId of the target Element that will own the ElementAspects after transformation. Returns - ElementAspectProps ElementAspectProps for the target iModel. Defined in core/backend/src/IModelTransformer.ts Line 551 Last Updated: 13 June, 2024