Family   |  
 Add a new family type with a given name and makes it be the current type. 
 Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.3.0.0 (25.3.0.0)
| Exception | Condition | 
|---|---|
| ArgumentNullException | Thrown when the input argument-"typeName"-is . | 
| ArgumentException | Thrown when the input argument-"typeName"-is already in use. | 
| InvalidOperationException | Thrown when the family type creation failed. |