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diff --git a/back-end/src/IRssFeedGenerator.cs b/back-end/src/IRssFeedGenerator.cs
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+/*
+* Copyright (c) 2023 Vaughn Nugent
+* 
+* Library: CMNext
+* Package: Content.Publishing.Blog.Admin
+* File: IRssFeedGenerator.cs 
+*
+* CMNext is free software: you can redistribute it and/or modify 
+* it under the terms of the GNU Affero General Public License as 
+* published by the Free Software Foundation, either version 3 of the
+* License, or (at your option) any later version.
+*
+* CMNext is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU Affero General Public License for more details.
+*
+* You should have received a copy of the GNU Affero General Public License
+* along with this program. If not, see https://www.gnu.org/licenses/.
+*/
+
+using System.Collections.Generic;
+
+using VNLib.Utils.IO;
+
+using Content.Publishing.Blog.Admin.Model;
+
+namespace Content.Publishing.Blog.Admin
+{
+    /// <summary>
+    /// Represents a class that can generate an RSS feed from a collection of posts.
+    /// </summary>
+    internal interface IRssFeedGenerator
+    {
+        /// <summary>
+        /// Builds an XML RSS feed from the given posts and writes it to the given output stream.
+        /// </summary>
+        /// <param name="context">The channel context containing feed information</param>
+        /// <param name="posts">The collection of posts to publish to the feed</param>
+        /// <param name="output">The output stream</param>
+        void BuildFeed(IChannelContext context, IEnumerable<PostMeta> posts, VnMemoryStream output);
+    }
+}