1 files changed, 16 insertions, 0 deletions

diff --git a/src/tools/heat/Extensibility/IHeatExtension.cs b/src/tools/heat/Extensibility/IHeatExtension.cs
new file mode 100644
index 00000000..8a00da37
--- /dev/null
+++ b/src/tools/heat/Extensibility/IHeatExtension.cs
@@ -0,0 +1,16 @@
+// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
+
+namespace WixToolset.Harvesters.Extensibility
+{
+    using WixToolset.Harvesters.Data;
+
+#pragma warning disable 1591 // TODO: add documentation
+    public interface IHeatExtension
+    {
+        IHeatCore Core { get; set; }
+
+        HeatCommandLineOption[] CommandLineTypes { get; }
+
+        void ParseOptions(string type, string[] args);
+    }
+}