1 files changed, 18 insertions, 0 deletions
diff --git a/src/DotNetOpenAuth.Core/Messaging/Reflection/IMessagePartNullEncoder.cs b/src/DotNetOpenAuth.Core/Messaging/Reflection/IMessagePartNullEncoder.cs
new file mode 100644
index 0000000..7581550
--- /dev/null
+++ b/src/DotNetOpenAuth.Core/Messaging/Reflection/IMessagePartNullEncoder.cs
@@ -0,0 +1,18 @@
+//-----------------------------------------------------------------------
+// <copyright file="IMessagePartNullEncoder.cs" company="Andrew Arnott">
+//     Copyright (c) Andrew Arnott. All rights reserved.
+// </copyright>
+//-----------------------------------------------------------------------
+
+namespace DotNetOpenAuth.Messaging.Reflection {
+	/// <summary>
+	/// A message part encoder that has a special encoding for a null value.
+	/// </summary>
+	public interface IMessagePartNullEncoder : IMessagePartEncoder {
+		/// <summary>
+		/// Gets the string representation to include in a serialized message 
+		/// when the message part has a <c>null</c> value.
+		/// </summary>
+		string EncodedNullValue { get; }
+	}
+}