Make optional
Make optional

mavasani/roslyn,mavasani/roslyn,dotnet/roslyn,mavasani/roslyn,CyrusNajmabadi/roslyn,CyrusNajmabadi/roslyn,CyrusNajmabadi/roslyn,shyamnamboodiripad/roslyn,shyamnamboodiripad/roslyn,shyamnamboodiripad/roslyn,dotnet/roslyn,dotnet/roslyn