API Reference > imodeljs-frontend > Views > Viewport > featureOverrideProvider featureOverrideProvider Accessor An object which can customize the appearance of Viewport.Features within a viewport. If defined, the provider will be invoked whenever the overrides are determined to need updating. The overrides can be explicitly marked as needing a refresh by calling Viewport.setFeatureOverrideProviderChanged. This is typically called when the internal state of the provider changes such that the computed overrides must also change. featureOverrideProvider: undefined | FeatureOverrideProvider see FeatureSymbology.Overrides see Viewport.findFeatureOverrideProvider as a replacement for the deprecated getter. see Viewport.addFeatureOverrideProvider as the replacement for the deprecated setter. note A viewport can now have any number of FeatureOverrideProviders, therefore this property is deprecated. The getter will return undefined unless exactly one provider is registered; the setter will remove any other providers and register only the new provider. Returns - undefined | FeatureOverrideProvider Setter An object which can customize the appearance of Viewport.Features within a viewport. If defined, the provider will be invoked whenever the overrides are determined to need updating. The overrides can be explicitly marked as needing a refresh by calling Viewport.setFeatureOverrideProviderChanged. This is typically called when the internal state of the provider changes such that the computed overrides must also change. featureOverrideProvider(provider: undefined | FeatureOverrideProvider): void see FeatureSymbology.Overrides see Viewport.findFeatureOverrideProvider as a replacement for the deprecated getter. see Viewport.addFeatureOverrideProvider as the replacement for the deprecated setter. note A viewport can now have any number of FeatureOverrideProviders, therefore this property is deprecated. The getter will return undefined unless exactly one provider is registered; the setter will remove any other providers and register only the new provider. Parameter Type Description provider undefined | FeatureOverrideProvider Returns - void Defined in core/frontend/src/Viewport.ts Line 1319 Last Updated: 29 November, 2022