ArcGIS Pro 2.8 API Reference Guide
SimpleRendererDefinition Class
Members 

ArcGIS.Desktop.Mapping Namespace : SimpleRendererDefinition Class
Represents simple renderer definition to draw all features in a layer with a common symbol.
Object Model
SimpleRendererDefinition ClassCIMSymbolReference Class
Syntax
public class SimpleRendererDefinition : RendererDefinition 
Public Class SimpleRendererDefinition 
   Inherits RendererDefinition
Remarks
Once you define a simple renderer, you can call a FeatureLayer's CreateRenderer and SetRenderer methods to create and assign a renderer to a feature layer.
Inheritance Hierarchy

System.Object
   ArcGIS.Desktop.Mapping.LayerDrawingDefinition
      ArcGIS.Desktop.Mapping.RendererDefinition
         ArcGIS.Desktop.Mapping.SimpleRendererDefinition

Requirements

Target Platforms: Windows 10, Windows 8.1

See Also

Reference

SimpleRendererDefinition Members
ArcGIS.Desktop.Mapping Namespace