Got at least one data fetching method working; turns out, we can't use a patched LogicStack to get the data

Vendor/EmbedIO-3.5.2/Authentication/Auth.cs

@@ -0,0 +1,31 @@
+using System.Security.Principal;
+
+namespace EmbedIO.Authentication
+{
+    /// <summary>
+    /// Provides useful authentication-related constants.
+    /// </summary>
+    public static class Auth
+    {
+        /// <summary>
+        /// Gets an <see cref="IPrincipal"/> interface representing
+        /// no user. To be used instead of <see langword="null"/>
+        /// to initialize or set properties of type <see cref="IPrincipal"/>.
+        /// </summary>
+        public static IPrincipal NoUser { get; } = new GenericPrincipal(
+            new GenericIdentity(string.Empty, string.Empty),
+            null);
+
+        /// <summary>
+        /// Creates and returns an <see cref="IPrincipal"/> interface
+        /// representing an unauthenticated user, with the given
+        /// authentication type.
+        /// </summary>
+        /// <param name="authenticationType">The type of authentication used to identify the user.</param>
+        /// <returns>An <see cref="IPrincipal"/> interface.</returns>
+        public static IPrincipal CreateUnauthenticatedPrincipal(string authenticationType)
+            => new GenericPrincipal(
+                new GenericIdentity(string.Empty, authenticationType),
+                null);
+    }
+}