From d4142166381da4e9fb924a83fd54848de09cb497 Mon Sep 17 00:00:00 2001
From: adospace <adospace@msn.com>
Date: Wed, 28 Aug 2024 11:30:10 +0200
Subject: [PATCH] Fix described in #21132

---
 src/Foundation/NSUrlSessionHandler.cs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/Foundation/NSUrlSessionHandler.cs b/src/Foundation/NSUrlSessionHandler.cs
index 638211139a35..a2029e14a34d 100644
--- a/src/Foundation/NSUrlSessionHandler.cs
+++ b/src/Foundation/NSUrlSessionHandler.cs
@@ -651,7 +651,10 @@ public bool PreAuthenticate {
 		[EditorBrowsable (EditorBrowsableState.Never)]
 		public IWebProxy? Proxy {
 			get => null;
-			set => throw new PlatformNotSupportedException ();
+			set {
+				if (value is not null)
+					throw new PlatformNotSupportedException ();
+			} 
 		}
 
 		// There doesn't seem to be a trivial way to specify the protocols to accept (or not)