ArcGIS Pro 2.8 API Reference Guide
CIMMapDocument Class
Members 

ArcGIS.Core.CIM Namespace : CIMMapDocument Class
Represents a map document which is the document type used for saving .mapx files.
Object Model
CIMMapDocument ClassCIMMapDocument ClassCIMMapDocument ClassCIMMap Class
Syntax
Inheritance Hierarchy

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

Requirements

Target Platforms: Windows 10, Windows 8.1

See Also

Reference

CIMMapDocument Members
ArcGIS.Core.CIM Namespace