public CSharpSourceTree Execute(RazorCodeDocument document, CSharpSourceTree sourceTree)
{
var activeDirectives = document.GetCSharpRenderingDirectives();
if (activeDirectives == null)
{
var discoveredDirectives = new List <IRazorDirective>();
AddDiscoveredDirectives(sourceTree, discoveredDirectives);
document.SetCSharpRenderingDirectives(discoveredDirectives);
}
return(sourceTree);
}