ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Core.CIM Namespace / CIMMapDocument Class / Clone Method

Clone Method (CIMMapDocument)
Creates a deep copy of CIMMapDocument.
Syntax
public CIMMapDocument Clone()
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 2.0 or higher.
See Also