ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Core.CIM Namespace / CIMAnnotationLayer Class / SubLayers Property

SubLayers Property (CIMAnnotationLayer)
Gets or sets a collection of AnnotationSubLayers, corresponding to the annotation subclasses defined by the annotation feature class.
Syntax
public CIMAnnotationSubLayer[] SubLayers {get; set;}
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 2.0 or higher.
See Also