API Reference > geometry-core > Serialization > BGFBAccessors > BGFBAccessors.DgnExtrusion > getSizePrefixedRootAsDgnExtrusion getSizePrefixedRootAsDgnExtrusion MethodStatic getSizePrefixedRootAsDgnExtrusion(bb: ByteBuffer, obj?: BGFBAccessors.DgnExtrusion): BGFBAccessors.DgnExtrusion Parameter Type Description bb ByteBuffer obj BGFBAccessors.DgnExtrusion Returns - BGFBAccessors.DgnExtrusion DgnExtrusion Defined in serialization/BGFBAccessors.ts Line 3764 Last Updated: 12 June, 2024