public EventDocumentationCommentTests()
        {
            compilation = CreateCompilationWithMscorlib(@"namespace Acme
{
    class Widget: IProcess
    {
        public event System.Action E;
        public event System.Action F { add { } remove { } }
    }
}
");

            acmeNamespace = (NamespaceSymbol)compilation.GlobalNamespace.GetMember<NamespaceSymbol>("Acme");
            widgetClass = acmeNamespace.GetMember<NamedTypeSymbol>("Widget");
        }
 internal NamespaceSymbol Get_System_Runtime_CompilerServices_NamespaceSymbol(NamespaceSymbol systemNamespace)
 {
     var runtimeNS = systemNamespace.GetMember<NamespaceSymbol>("Runtime");
     return runtimeNS.GetMember<NamespaceSymbol>("CompilerServices");
 }