ArcGIS Pro 2.6 API Reference Guide
BuildingSceneLayer Class
Members 

ArcGIS.Desktop.Mapping Namespace : BuildingSceneLayer Class
BuildingSceneLayers represent the 3D model aspect of Building Information Modeling (BIM)
Object Model
BuildingSceneLayer ClassFilterDefinition ClassLayer ClassFilterDefinition ClassCIMDataConnection ClassCIMBaseLayer ClassFilterDefinition ClassSpatialReference ClassMap ClassILayerContainer InterfaceEnvelope Class
Syntax
Remarks
BuildingSceneLayers are typically derived from BIM data extracted from Autodesk revit files.
BuildingSceneLayers are a CompositeLayer. They contain two top-level child layers:
o A FeatureSceneLayer providing an "Overview" (think of it as a simplified rendering of the building exterior)
o A BuildingDisciplineSceneLayer providing the "Full Model" which includes all of the building disciplines extracted from the original BIM
Inheritance Hierarchy

System.Object
   ArcGIS.Desktop.Framework.Contracts.PropertyChangedBase
      ArcGIS.Desktop.Mapping.MapMember
         ArcGIS.Desktop.Mapping.Layer
            ArcGIS.Desktop.Mapping.CompositeLayer
               ArcGIS.Desktop.Mapping.ServiceLayer
                  ArcGIS.Desktop.Mapping.BuildingSceneLayer

Requirements

Target Platforms: Windows 10, Windows 8.1, Windows 7

See Also

Reference

BuildingSceneLayer Members
ArcGIS.Desktop.Mapping Namespace