ArcGIS Pro 2.9 API Reference Guide
CIMLayerDocument Class
Members 

ArcGIS.Core.CIM Namespace : CIMLayerDocument Class
Represents a layer document which is the document type used for saving .lyrx files.
Object Model
CIMLayerDocument ClassCIMLayerDocument ClassCIMLayerDocument Class
Syntax
Inheritance Hierarchy

System.Object
   ArcGIS.Core.CIM.CIMObject
      ArcGIS.Core.CIM.CIMVersion
         ArcGIS.Core.CIM.CIMLayerDocument

Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

See Also

Reference

CIMLayerDocument Members
ArcGIS.Core.CIM Namespace