From aee507b44fb82f55830f18306d4ad0013e1fe25c Mon Sep 17 00:00:00 2001
From: Nigel Sampson <nigel.sampson@compiledexperience.com>
Date: Tue, 10 Mar 2015 16:18:21 +1300
Subject: [PATCH] ActionMessage.UpdateAvailability is now virtual. Resolves
 #134

---
 src/Caliburn.Micro.Platform/ActionMessage.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Caliburn.Micro.Platform/ActionMessage.cs b/src/Caliburn.Micro.Platform/ActionMessage.cs
index ed5cfd98d..0fb736889 100644
--- a/src/Caliburn.Micro.Platform/ActionMessage.cs
+++ b/src/Caliburn.Micro.Platform/ActionMessage.cs
@@ -288,7 +288,7 @@ protected override void Invoke(object eventArgs) {
         /// <summary>
         /// Forces an update of the UI's Enabled/Disabled state based on the the preconditions associated with the method.
         /// </summary>
-        public void UpdateAvailability() {
+        public virtual void UpdateAvailability() {
             if (context == null)
                 return;