Gets the valid sketch gallery options of a family symbol. 
Namespace: Autodesk.Revit.UI
Assembly: RevitAPIUI (in RevitAPIUI.dll) Version: 24.0.0.0 (24.0.0.0)
Since:  2017 
Syntax
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Parameters
- familySymbol
- Type: Autodesk.Revit.DBFamilySymbol
 The family symbol.
Return Value
The valid list of SketchGalleryOptions.Exceptions
| Exception | Condition | 
|---|---|
| Autodesk.Revit.ExceptionsArgumentNullException | A non-optional argument was null |