Collects all the target geometry from the input geometry object and adds it as IFC handles to the IFCInfo. 
   Namespace:   Autodesk.Revit.DB.IFC  
  Assembly:   RevitAPIIFC  (in RevitAPIIFC.dll) Version: 2015.0.0.0 (2015.0.0.0) 
  Since:  2012 
Syntax
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Parameters
- exporterIFC
 -  Type:  Autodesk.Revit.DB.IFC ExporterIFC  
The exporter. 
- geometryInfo
 -  Type:  Autodesk.Revit.DB.IFC IFCGeometryInfo  
The container object which collects the geometry. 
- gNode
 -  Type:  Autodesk.Revit.DB GeometryObject  
The geometry object to be processed. 
- offset
 -  Type:  Autodesk.Revit.DB XYZ  
The offset to apply to each of the collected geometry handles. 
- forceVisible
 -  Type:  System Boolean  
True to process geometry which is not set as visible. False to only process visible geometry. 
Remarks
 The type of geometry collected is determined by the method of creation for the IFCGeometryInfo. 
 Exceptions
| Exception | Condition | 
|---|---|
| Autodesk.Revit.Exceptions ArgumentNullException | A non-optional argument was NULL |