ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Core.CIM Namespace / CIMGraphic Class / Masks Property

Masks Property
Gets or sets an array of masks for the graphic. Typically set by the layer or element during draw.
Syntax
public Array Masks {get; set;}
Remarks
The per-feature masks which defines an area where the CIMGraphic should NOT draw. Every element in the array should support be a Polygon.
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 2.0 or higher.
See Also