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/Utilities/StringExtensions.cs

@@ -0,0 +1,55 @@
+using System;
+
+namespace EmbedIO.Utilities
+{
+    /// <summary>
+    /// Provides extension methods for <see cref="string"/>.
+    /// </summary>
+    public static class StringExtensions
+    {
+        private static readonly char[] CommaSplitChars = {','};
+
+        /// <summary>Splits a string into substrings based on the specified <paramref name="delimiters"/>.
+        /// The returned array includes empty array elements if two or more consecutive delimiters are found
+        /// in <paramref name="this"/>.</summary>
+        /// <param name="this">The <see cref="string"/> on which this method is called.</param>
+        /// <param name="delimiters">An array of <see cref="char"/>s to use as delimiters.</param>
+        /// <returns>An array whose elements contain the substrings in <paramref name="this"/> that are delimited
+        /// by one or more characters in <paramref name="delimiters"/>.</returns>
+        /// <exception cref="NullReferenceException"><paramref name="this"/> is <see langword="null"/>.</exception>
+        public static string[] SplitByAny(this string @this, params char[] delimiters) => @this.Split(delimiters);
+        
+        /// <summary>Splits a string into substrings, using the comma (<c>,</c>) character as a delimiter.
+        /// The returned array includes empty array elements if two or more commas are found in <paramref name="this"/>.</summary>
+        /// <param name="this">The <see cref="string"/> on which this method is called.</param>
+        /// <returns>An array whose elements contain the substrings in <paramref name="this"/> that are delimited by commas.</returns>
+        /// <exception cref="NullReferenceException"><paramref name="this"/> is <see langword="null"/>.</exception>
+        /// <seealso cref="SplitByComma(string,StringSplitOptions)"/>
+        public static string[] SplitByComma(this string @this) => @this.Split(CommaSplitChars);
+
+        /// <summary>Splits a string into substrings, using the comma (<c>,</c>) character as a delimiter.
+        /// You can specify whether the substrings include empty array elements.</summary>
+        /// <param name="this">The <see cref="string"/> on which this method is called.</param>
+        /// <param name="options"><see cref="StringSplitOptions.RemoveEmptyEntries"/> to omit empty array elements from the array returned;
+        /// or <see cref="StringSplitOptions.None"/> to include empty array elements in the array returned.</param>
+        /// <returns>
+        /// <para>An array whose elements contain the substrings in <paramref name="this"/> that are delimited by commas.</para>
+        /// <para>For more information, see the Remarks section of the <see cref="string.Split(char[],StringSplitOptions)"/> method.</para>
+        /// </returns>
+        /// <exception cref="NullReferenceException"><paramref name="this"/> is <see langword="null"/>.</exception>
+        /// <exception cref="ArgumentException"><paramref name="options">options</paramref> is not one of the <see cref="StringSplitOptions"/> values.</exception>
+        /// <seealso cref="SplitByComma(string)"/>
+        public static string[] SplitByComma(this string @this, StringSplitOptions options) =>
+            @this.Split(CommaSplitChars, options);
+
+        /// <summary>
+        /// Ensures that a <see cref="string"/> is never empty,
+        /// by transforming empty strings into <see langword="null"/>.
+        /// </summary>
+        /// <param name="this">The <see cref="string"/> on which this method is called.</param>
+        /// <returns>If <paramref name="this"/> is the empty string, <see langword="null"/>;
+        /// otherwise, <paramref name="this."/></returns>
+        public static string? NullIfEmpty(this string @this)
+            => string.IsNullOrEmpty(@this) ? null : @this;
+    }
+}