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/ICookieCollection.cs

@@ -0,0 +1,49 @@
+using System.Net;
+using System.Collections;
+using System.Collections.Generic;
+
+namespace EmbedIO
+{
+    /// <summary>
+    /// Interface for Cookie Collection.
+    /// </summary>
+    /// <seealso cref="ICollection" />
+#pragma warning disable CA1010 // Should implement ICollection<Cookie> - not possible when wrapping System.Net.CookieCollection.
+    public interface ICookieCollection : IEnumerable<Cookie>, ICollection
+#pragma warning restore CA1010
+    {
+        /// <summary>
+        /// Gets the <see cref="Cookie"/> with the specified name.
+        /// </summary>
+        /// <value>
+        /// The <see cref="Cookie"/>.
+        /// </value>
+        /// <param name="name">The name.</param>
+        /// <returns>The cookie matching the specified name.</returns>
+        Cookie? this[string name] { get; }
+
+        /// <summary>
+        /// Determines whether this <see cref="ICookieCollection"/> contains the specified <see cref="Cookie"/>.
+        /// </summary>
+        /// <param name="cookie">The cookie to find in the <see cref="ICookieCollection"/>.</param>
+        /// <returns>
+        /// <see langword="true"/> if this <see cref="ICookieCollection"/> contains the specified <paramref name="cookie"/>;
+        /// otherwise, <see langword="false"/>.
+        /// </returns>
+        bool Contains(Cookie cookie);
+
+        /// <summary>
+        /// Copies the elements of this <see cref="ICookieCollection"/> to a <see cref="Cookie"/> array
+        /// starting at the specified index of the target array.
+        /// </summary>
+        /// <param name="array">The target <see cref="Cookie"/> array to which the <see cref="ICookieCollection"/> will be copied.</param>
+        /// <param name="index">The zero-based index in the target <paramref name="array"/> where copying begins.</param>
+        void CopyTo(Cookie[] array, int index);
+
+        /// <summary>
+        /// Adds the specified cookie.
+        /// </summary>
+        /// <param name="cookie">The cookie.</param>
+        void Add(Cookie cookie);
+    }
+}