API Reference > geometry-core > Serialization > BGFBAccessors > BGFBAccessors.TransitionSpiral > createExtraDataVector createExtraDataVector MethodStatic createExtraDataVector(builder: Builder, data: number[] | Uint8Array): number Parameter Type Description builder Builder data number[] | Uint8Array Returns - number flatbuffers.Offset Defined in serialization/BGFBAccessors.ts Line 5929 Last Updated: 11 June, 2024