The ArcGISPortal class is part of the Pro Portal API which provides a way to build applications 
            that work with content from ArcGIS Online or an ArcGIS Portal. ArcGIS Portal is software technology 
            from Esri that customers can deploy either on premise or in the cloud. ArcGIS Online is 
            Esri's Software as a Service offering that represents GIS as a Service and is implemented using 
            the same technology as ArcGIS Portal. The Portal API allows application developers to work with users, 
            groups and content hosted within ArcGIS Online or within an ArcGIS Portal.
            
            System.Object
   ArcGIS.Desktop.Core.ArcGISPortal
Target Platforms: Windows 10, Windows 8.1