In ServiceRoutesExtensions.cs: public static void Add<T>(this IServiceRoutes serviceRoutes, string restPath, ApplyTo verbs, params Expression<Func<T, object>>[] propertyExpressions) now returns IServiceRoutes.
Merge pull request #814 from TorbenRahbekKoch/ServiceRoutes

ServiceRoutesExtensions.Add<T> with propertyExpressions now returns IServiceRoutes