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/Sessions/ISessionProxy.cs

@@ -0,0 +1,33 @@
+namespace EmbedIO.Sessions
+{
+    /// <summary>
+    /// Represents a session proxy, i.e. an object that provides
+    /// the same interface as a session object, plus a basic interface
+    /// to a session manager.
+    /// </summary>
+    /// <remarks>
+    /// A session proxy can be used just as if it were a session object.
+    /// A session is automatically created wherever its data are accessed.
+    /// </remarks>
+    /// <seealso cref="ISession" />
+    public interface ISessionProxy : ISession
+    {
+        /// <summary>
+        /// Gets a value indicating whether a session exists for the current context.
+        /// </summary>
+        /// <value>
+        /// <see langword="true"/> if a session exists; otherwise, <see langword="false"/>.
+        /// </value>
+        bool Exists { get; }
+
+        /// <summary>
+        /// Deletes the session for the current context.
+        /// </summary>
+        void Delete();
+
+        /// <summary>
+        /// Deletes the session for the current context and creates a new one.
+        /// </summary>
+        void Regenerate();
+    }
+}