ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Core.Geometry Namespace / GeometryBuilderEx Class / SpatialReference Property

SpatialReference Property (GeometryBuilderEx)
Gets or sets the SpatialReference instance on this builder.
Syntax
public SpatialReference SpatialReference {get; set;}
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 2.5 or higher.
See Also