ArcGIS Pro 2.6 API Reference Guide
CIMSymbolLayer Class
Members 

ArcGIS.Core.CIM Namespace : CIMSymbolLayer Class
Represents a symbol layer. Symbol layers are the components that make up a symbol. A symbol layer is represented by a stroke, fill, marker, or procedural symbol layer.
Object Model
CIMSymbolLayer ClassCIMGeometricEffect Class
Syntax
Inheritance Hierarchy

System.Object
   ArcGIS.Core.CIM.CIMObject
      ArcGIS.Core.CIM.CIMSymbolLayer
         ArcGIS.Core.CIM.CIMFill
         ArcGIS.Core.CIM.CIMMarker
         ArcGIS.Core.CIM.CIMMaterialSymbolLayer
         ArcGIS.Core.CIM.CIMMeshEdge
         ArcGIS.Core.CIM.CIMProceduralSymbolLayer
         ArcGIS.Core.CIM.CIMStroke

Requirements

Target Platforms: Windows 10, Windows 8.1, Windows 7

See Also

Reference

CIMSymbolLayer Members
ArcGIS.Core.CIM Namespace