private IRazorLightEngine SetupRazorEngine(string folder) { if (_engine != null) { return(_engine); } // Set up the hosting environment var config = EngineConfiguration.Default; config.Namespaces.Add("OkapiDoc.TemplateBase"); config.Namespaces.Add("System"); // Here you go _engine = EngineFactory.CreateCustom(new FilesystemTemplateManager(folder), config); return(_engine); }