Power Automate - Dataverse] How to execute a fetchXml query that includes options not supported by the List rows connector?

Plg_ExecuteFetchXml.cs

// <copyright file="Plg_ExecuteFetchXml.cs" company="">
// Copyright (c) 2022 All Rights Reserved
// </copyright>
// <author></author>
// <date>3/14/2022 2:38:36 PM</date>
// <summary>Implements the Plg_ExecuteFetchXml Plugin.</summary>
// <auto-generated>
//     This code was generated by a tool.
//     Runtime Version:4.0.30319.1
// </auto-generated>

using System;
using System.ServiceModel;
using Microsoft.Xrm.Sdk;
using Microsoft.Xrm.Sdk.Query;

namespace MEA.POC.Plugins
{

    /// <summary>
    /// Plg_ExecuteFetchXml Plugin.
    /// </summary>    
    public class Plg_ExecuteFetchXml: PluginBase
    {
        /// <summary>
        /// Initializes a new instance of the <see cref="Plg_ExecuteFetchXml"/> class.
        /// </summary>
        /// <param name="unsecure">Contains public (unsecured) configuration information.</param>
        /// <param name="secure">Contains non-public (secured) configuration information. 
        /// When using Microsoft Dynamics 365 for Outlook with Offline Access, 
        /// the secure string is not passed to a plug-in that executes while the client is offline.</param>
        public Plg_ExecuteFetchXml(string unsecure, string secure)
            : base(typeof(Plg_ExecuteFetchXml))
        {
            
           // TODO: Implement your custom configuration handling.
        }


        /// <summary>
        /// Main entry point for he business logic that the plug-in is to execute.
        /// </summary>
        /// <param name="localContext">The <see cref="LocalPluginContext"/> which contains the
        /// <see cref="IPluginExecutionContext"/>,
        /// <see cref="IOrganizationService"/>
        /// and <see cref="ITracingService"/>
        /// </param>
        /// <remarks>
        /// For improved performance, Microsoft Dynamics 365 caches plug-in instances.
        /// The plug-in's Execute method should be written to be stateless as the constructor
        /// is not called for every invocation of the plug-in. Also, multiple system threads
        /// could execute the plug-in at the same time. All per invocation state information
        /// is stored in the context. This means that you should not use global variables in plug-ins.
        /// </remarks>
        protected override void ExecuteCdsPlugin(ILocalPluginContext localContext)
        {
            if (localContext == null)
            {
                throw new InvalidPluginExecutionException(nameof(localContext));
            }           
            // Obtain the tracing service
            ITracingService tracingService = localContext.TracingService;

            try
            { 
                IPluginExecutionContext context = (IPluginExecutionContext)localContext.PluginExecutionContext;
                IOrganizationService currentUserService = localContext.CurrentUserService;

                var fetchXml = (string) context.InputParameters["mea_fetchxml"];
                var result = currentUserService.RetrieveMultiple(new FetchExpression(fetchXml));
                context.OutputParameters["mea_fetchxmlresponse"] = result;
            }	
            catch (Exception ex)
            {
                tracingService?.Trace("An error occurred executing Plugin MEA.POC.Plugins.Plg_ExecuteFetchXml : {0}", ex.ToString());
                throw new InvalidPluginExecutionException("An error occurred executing Plugin MEA.POC.Plugins.Plg_ExecuteFetchXml .", ex);
            }	
        }
    }
}