API Reference > geometry-core > Serialization > BGFBAccessors > BGFBAccessors.Polyface > auxData auxData Method auxData(obj?: BGFBAccessors.PolyfaceAuxData): | BGFBAccessors.PolyfaceAuxData Parameter Type Description obj BGFBAccessors.PolyfaceAuxData Returns - | BGFBAccessors.PolyfaceAuxData PolyfaceAuxData|null Defined in serialization/BGFBAccessors.ts Line 5140 Last Updated: 11 June, 2024