Creates an object which wraps the arguments of NewFamilyInstance() for batch creation. 
   Namespace:   Autodesk.Revit.Creation  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0) 
Syntax
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Parameters
- location
-  Type:  Autodesk.Revit.DB XYZ  
 The physical location where the instance is to be placed.
- symbol
-  Type:  Autodesk.Revit.DB FamilySymbol  
 A FamilySymbol object that represents the type of the instance that is to be inserted.
- host
-  Type:  Autodesk.Revit.DB Element  
 The object into which the family instance is to be inserted, often known as the host.
- structuralType
-  Type:  Autodesk.Revit.DB.Structure StructuralType  
 If structural then specify the type of the component.