API Reference > imodeljs-frontend > Views > PerModelCategoryVisibility > PerModelCategoryVisibility.Overrides PerModelCategoryVisibility.Overrides Interface Describes a set of per-model category visibility overrides. Changes to these overrides invoke the Viewport.onViewedCategoriesPerModelChanged event. see Viewport.perModelCategoryVisibility. Methods Name Description [iterator](): Iterator<PerModelCategoryVisibility.OverrideEntry, any, undefined> An iterator over all of the visibility overrides. addOverrides(fs: FeatureSymbology.Overrides, ovrs: Uint32Map<Uint32Set>): void Populate the symbology overrides based on the per-model category visibility. clearOverrides(modelIds?: Id64Arg): void Removes all overrides for the specified models, or for all models if modelIds is undefined. getOverride(modelId: string, categoryId: string): PerModelCategoryVisibility.Override Returns the override state of the specified category within the specified model. setOverride(modelIds: Id64Arg, categoryIds: Id64Arg, override: PerModelCategoryVisibility.Override): void Changes the override state of one or more categories for one or more models. Defined in core/frontend/src/PerModelCategoryVisibility.ts Line 45 Last Updated: 29 November, 2022