Support of MEPSection methods of MEPSystem added

RevitLookup/Core/ComponentModel/DescriptorMap.cs

@@ -101,6 +101,7 @@ public static Descriptor FindDescriptor(object obj, Type type)
             WorksetTable when type is null || type == typeof(WorksetTable) => new WorksetTableDescriptor(),
             BoundarySegment value when type is null || type == typeof(BoundarySegment) => new BoundarySegmentDescriptor(value),
             SpatialElement value when type is null || type == typeof(SpatialElement) => new SpatialElementDescriptor(value),
+            MEPSystem value when type is null || type == typeof(MEPSystem) => new MepSystemDescriptor(value),
 #if R24_OR_GREATER
             EvaluatedParameter value when type is null || type == typeof(EvaluatedParameter) => new EvaluatedParameterDescriptor(value),
 #endif

RevitLookup/Core/ComponentModel/Descriptors/MepSystemDescriptor.cs

@@ -0,0 +1,52 @@
+// Copyright 2003-$File.CreatedYear by Autodesk, Inc.
+// 
+// Permission to use, copy, modify, and distribute this software in
+// object code form for any purpose and without fee is hereby granted,
+// provided that the above copyright notice appears in all copies and
+// that both that copyright notice and the limited warranty and
+// restricted rights notice below appear in all supporting
+// documentation.
+// 
+// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
+// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
+// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE.  AUTODESK, INC.
+// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
+// UNINTERRUPTED OR ERROR FREE.
+// 
+// Use, duplication, or disclosure by the U.S. Government is subject to
+// restrictions set forth in FAR 52.227-19 (Commercial Computer
+// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
+// (Rights in Technical Data and Computer Software), as applicable.
+
+using System.Reflection;
+using Autodesk.Revit.DB;
+using RevitLookup.Core.Contracts;
+using RevitLookup.Core.Objects;
+
+namespace RevitLookup.Core.ComponentModel.Descriptors;
+
+public class MepSystemDescriptor(MEPSystem mepSystem) : ElementDescriptor(mepSystem), IDescriptorResolver
+{
+    public new ResolveSet Resolve(Document context, string target, ParameterInfo[] parameters)
+    {
+        return target switch
+        {
+            nameof(MEPSystem.GetSectionByIndex) => ResolveMepSections(),
+            nameof(MEPSystem.GetSectionByNumber) => ResolveMepSections(),
+            _ => null
+        };
+
+        ResolveSet ResolveMepSections()
+        {
+            var capacity = mepSystem.SectionsCount;
+            var resolveSummary = new ResolveSet(capacity);
+            for (var i = 0; i < capacity; i++)
+            {
+                var section = mepSystem.GetSectionByIndex(i);
+                resolveSummary.AppendVariant(section, $"Index: {i}, number: {section.Number}");
+            }
+
+            return resolveSummary;
+        }
+    }
+}