API Reference > imodeljs-frontend > Rendering > ParticleCollectionBuilder > finish finish Method Produces a finished graphic from the accumulated particles. It returns the finished graphic, or undefined if the collection contains no particles or the RenderSystem failed to produce the graphic. finish(): undefined | RenderGraphic note After this method returns, the particle collection is empty. Returns - undefined | RenderGraphic Defined in core/frontend/src/render/ParticleCollectionBuilder.ts Line 103 Last Updated: 11 June, 2024