ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Core.CIM Namespace / CIMSymbolLayer Class / Enable Property

Enable Property (CIMSymbolLayer)
Gets or sets a value indicating whether the symbol layer is visible. The symbol layer draws only when enabled. Currently, an invisible layer is not considered in any transformations when in a 3D context.
Syntax
public bool Enable {get; set;}
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 2.0 or higher.
See Also