Initial ...

Models/XGroupedData.cs

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+using System;
+using System.Collections.Generic;
+using xModels.Base;
+
+namespace xServices.Models
+{
+    public class XGroupedDataEntity<T, TKey, TGroupedKey>
+    where T : XBaseEntity<TKey>
+    {
+        public TGroupedKey GroupedBy { set; get; }
+        public IEnumerable<T> Members { set; get; }
+        public DateTime TimeStamp { set; get; }
+    }
+
+    public class XGroupedDataDto<T, TGroupedKey>
+    where T : XBaseDto
+    {
+        public TGroupedKey GroupedBy { set; get; }
+        public IEnumerable<T> Members { set; get; }
+        public DateTime TimeStamp { set; get; }
+    }
+}