fix: Allow an explicit MustExist precondition for update

jskeet · jskeet · commit f9f39a522e38 · 2024-01-18T17:02:17.000Z
Fixes #11361
diff --git a/apis/Google.Cloud.Firestore/Google.Cloud.Firestore/WriteBatch.cs b/apis/Google.Cloud.Firestore/Google.Cloud.Firestore/WriteBatch.cs
@@ -1,4 +1,4 @@
-﻿// Copyright 2017, Google Inc. All rights reserved.
+// Copyright 2017, Google Inc. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -121,7 +121,6 @@ public WriteBatch Update(DocumentReference documentReference, IDictionary<FieldP
             GaxPreconditions.CheckNotNull(documentReference, nameof(documentReference));
             GaxPreconditions.CheckNotNull(updates, nameof(updates));
             GaxPreconditions.CheckArgument(updates.Count != 0, nameof(updates), "Empty set of updates specified");
-            GaxPreconditions.CheckArgument(precondition?.Exists != true, nameof(precondition), "Cannot specify a must-exist precondition for update");
 
             var serializedUpdates = updates.ToDictionary(pair => pair.Key, pair => ValueSerializer.Serialize(documentReference.Database.SerializationContext, pair.Value));
             var expanded = ExpandObject(serializedUpdates);
