API Reference > imodeljs-backend > iModels > IModelExportHandler > onExportElementUniqueAspect onExportElementUniqueAspect MethodProtected Called when an ElementUniqueAspect should be exported. onExportElementUniqueAspect(_aspect: ElementUniqueAspect, _isUpdate: undefined | boolean): void note This should be overridden to actually do the export. Parameter Type Description _aspect ElementUniqueAspect _isUpdate undefined | boolean Returns - void Defined in core/backend/src/IModelExporter.ts Line 88 Last Updated: 11 June, 2024