ArcGIS Pro 2.8 API Reference Guide
CIMSubtypeGroupLayer Class
Members 

ArcGIS.Core.CIM Namespace : CIMSubtypeGroupLayer Class
Represents a subtype group layer that works with feature classes enabled with subtypes.
Object Model
CIMSubtypeGroupLayer ClassCIMFeatureExtrusion ClassCIMExpressionInfo ClassCIMFeatureTable ClassCIMSubtypeGroupLayer ClassCIMSubtypeGroupLayer ClassCIMHtmlPopupFormat ClassCIM3DLayerProperties ClassCIMLayerElevationSurface ClassCIMLayerTemplate ClassCIMPageDefinition ClassCIMColor ClassCIMPopupInfo ClassCIMColor ClassCIMSymbolReference ClassTimeInstant Class
Syntax
Remarks
A subtype layer is a group layer that contains feature layers, each of which represents a subtype in a feature class.
Inheritance Hierarchy

System.Object
   ArcGIS.Core.CIM.CIMObject
      ArcGIS.Core.CIM.CIMDefinition
         ArcGIS.Core.CIM.CIMBaseLayer
            ArcGIS.Core.CIM.CIMBasicFeatureLayer
               ArcGIS.Core.CIM.CIMSubtypeGroupLayer

Requirements

Target Platforms: Windows 10, Windows 8.1

See Also

Reference

CIMSubtypeGroupLayer Members
ArcGIS.Core.CIM Namespace