From 58a35d3e292149ac4d4b043e65bf5c0eb7bdc543 Mon Sep 17 00:00:00 2001
From: Sebastian Stehle <sebastian@squidex.io>
Date: Mon, 12 Feb 2024 13:54:49 +0100
Subject: [PATCH] Proper null handling.

---
 YDotNet/Document/Transactions/Transaction.cs | 6 ++++++
 YDotNet/Native/Types/Branches/BranchKind.cs  | 1 +
 2 files changed, 7 insertions(+)

diff --git a/YDotNet/Document/Transactions/Transaction.cs b/YDotNet/Document/Transactions/Transaction.cs
index f5f4e6fe..5dbaf53c 100644
--- a/YDotNet/Document/Transactions/Transaction.cs
+++ b/YDotNet/Document/Transactions/Transaction.cs
@@ -373,6 +373,12 @@ private nint GetWithKind(string name, BranchKind expectedKind)
         }
 
         var branchKind = (BranchKind)BranchChannel.Kind(branchHandle);
+
+        if (branchKind == BranchKind.Null)
+        {
+            return nint.Zero;
+        }
+
         if (branchKind != expectedKind)
         {
             throw new YDotNetException($"Expected '{expectedKind}', got '{branchKind}'.");
diff --git a/YDotNet/Native/Types/Branches/BranchKind.cs b/YDotNet/Native/Types/Branches/BranchKind.cs
index 8fb10afd..b5ea401f 100644
--- a/YDotNet/Native/Types/Branches/BranchKind.cs
+++ b/YDotNet/Native/Types/Branches/BranchKind.cs
@@ -2,6 +2,7 @@ namespace YDotNet.Native.Types.Branches;
 
 internal enum BranchKind
 {
+    Null = 0,
     Array = 1,
     Map = 2,
     Text = 3,