method
SetOption
Microsoft.VisualStudio.LanguageServices.CSharp.ProjectSystemShim.Interop.ICSCompilerConfig.SetOption(Microsoft.VisualStudio.LanguageServices.CSharp.ProjectSystemShim.Interop.CompilerOptions, Microsoft.VisualStudio.LanguageServices.CSharp.ProjectSystemShim.HACK_VariantStructure)