In order to add this '[Serf]' to the Option Set, you must also add its '[King]'--if you continue it will not be added to the Option Set

Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0)

Syntax

C#
`public static FailureDefinitionId MustAddKing { get; }`

Visual Basic
`Public Shared ReadOnly Property MustAddKing As FailureDefinitionId Get`

Visual C++
`public: static property FailureDefinitionId^ MustAddKing { FailureDefinitionId^ get (); }`

See Also