diff --git a/src/Gemstone.Data/Model/EventTypeInterface.cs b/src/Gemstone.Data/Model/EventTypeInterface.cs
new file mode 100644
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+++ b/src/Gemstone.Data/Model/EventTypeInterface.cs
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+//******************************************************************************************************
+//  EventTypeInterface.cs - Gbtc
+//
+//  Copyright © 2025, Grid Protection Alliance.  All Rights Reserved.
+//
+//  Licensed to the Grid Protection Alliance (GPA) under one or more contributor license agreements. See
+//  the NOTICE file distributed with this work for additional information regarding copyright ownership.
+//  The GPA licenses this file to you under the MIT License (MIT), the "License"; you may
+//  not use this file except in compliance with the License. You may obtain a copy of the License at:
+//
+//      http://opensource.org/licenses/MIT
+//
+//  Unless agreed to in writing, the subject software distributed under the License is distributed on an
+//  "AS-IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. Refer to the
+//  License for the specific language governing permissions and limitations.
+//
+//  Code Modification History:
+//  ----------------------------------------------------------------------------------------------------
+//  10/18/2025 - C. Lackner
+//       Generated original version of source code.
+//
+//******************************************************************************************************
+
+namespace Gemstone.Data.Model;
+
+/// <summary>
+/// Defines an interface that marks a class as a JSON construct in <see cref="EventDetails"/>
+/// the property name.
+/// </summary>
+public interface IEventType { }