Hello, I've been trying to implement an event handler for the FileService event SavedTemplate (to make a log of template modifications). I'm following the documentation as closely as I can, but when I try to add my handler to the savedTemplate property of the FileService class, I get a

No overload for "my_handler" matches delegate TypedEventHandler

using System.Web.UI;
using Umbraco.Core;
using Umbraco.Core.Services;


namespace Infrastructure.Events
{
    public class UmbracoTemplateSavedHandler : ApplicationEventHandler
    {
        protected override void ApplicationStarted(UmbracoApplicationBase umbracoApplication, ApplicationContext applicationContext)
        {
            FileService.SavingTemplate += FileService_SavedTemplate;
            base.ApplicationStarted(umbracoApplication, applicationContext);
        }

        private void FileService_SavedTemplate(IFileService sender, Umbraco.Core.Events.SaveEventArgs<ITemplate> e)
        {
            //Log template here
        }
    }
}

I don't really see anything in the docs that point to anything more concrete for what my method signature should look like. What am I missing here?