API Reference > imodeljs-backend > iModels > IModelExportHandler > onExportElementUniqueAspect onExportElementUniqueAspect MethodProtected Called when an ElementUniqueAspect should be exported. onExportElementUniqueAspect(_aspect: ElementUniqueAspect, _isUpdate: boolean | undefined): void note This should be overridden to actually do the export. Parameter Type Description _aspect ElementUniqueAspect _isUpdate boolean | undefined Returns - void Defined in core/backend/src/IModelExporter.ts Line 85 Last Updated: 13 June, 2024