ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Core.CIM Namespace / CIMSubtypeGroupLayer Class / SubtypeLayers Property

SubtypeLayers Property (CIMSubtypeGroupLayer)
Gets or sets the layer URI corresponding to each subtype value.
Syntax
public string[] SubtypeLayers {get; set;}
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 2.0 or higher.
See Also