API Reference > geometry-core > Serialization > BGFBAccessors > BGFBAccessors.BsplineSurface > boundaries boundaries Method boundaries(obj?: BGFBAccessors.CurveVector): | BGFBAccessors.CurveVector Parameter Type Description obj BGFBAccessors.CurveVector Returns - | BGFBAccessors.CurveVector CurveVector|null Defined in serialization/BGFBAccessors.ts Line 3176 Last Updated: 11 June, 2024