No default value for lists in .NET

examples/dotnet/Examples/ErrorHandler.cs

@@ -44,7 +44,7 @@ public async Task HandleErrors()
             user = await app.LogInAsync(Credentials.Anonymous());
             config = new PartitionSyncConfiguration("myPartition", user);
             //:remove-start:
-            config.Schema = new[] { typeof(Examples.Models.User) };
+            config.Schema = new[] { typeof(Models.User) };
             //:remove-end:
             var realm = await Realm.GetInstanceAsync(config);
             // :snippet-start:handle-errors
@@ -54,7 +54,7 @@ public async Task HandleErrors()
                 {
                     // See https://www.mongodb.com/docs/realm-sdks/dotnet/latest/reference/Realms.Sync.Exceptions.ErrorCode.html
                     // for a list of all error codes
-                    case ErrorCode.RuntimeError:
+                    case ErrorCode.BadQuery:
                         break;
                 }
             };

examples/dotnet/Examples/Objects.cs

@@ -62,7 +62,8 @@ public partial class Person_Required : IRealmObject
     // :snippet-start: default
     // :replace-start: {
     //  "terms": {
-    //      "PersonB": "Person" }
+    //      "PersonB": "Person",
+    //      "Person_Required": "PhoneNumber"}
     // }
     public partial class PersonB : IRealmObject
     {
@@ -72,6 +73,8 @@ public partial class PersonB : IRealmObject
         public ObjectId ID { get; set; }
         //:remove-end:
         public string Name { get; set; } = "foo";
+
+        public IList<Person_Required> PhoneNumbers { get; } = null!;
     }
     // :replace-end:
     // :snippet-end:

source/examples/generated/dotnet/ErrorHandler.snippet.handle-errors.cs

@@ -4,7 +4,7 @@
     {
         // See https://www.mongodb.com/docs/realm-sdks/dotnet/latest/reference/Realms.Sync.Exceptions.ErrorCode.html
         // for a list of all error codes
-        case ErrorCode.RuntimeError:
+        case ErrorCode.BadQuery:
             break;
     }
 };

source/examples/generated/dotnet/Objects.snippet.default.cs

@@ -1,4 +1,6 @@
 public partial class Person : IRealmObject
 {
     public string Name { get; set; } = "foo";
+
+    public IList<PhoneNumber> PhoneNumbers { get; } = null!;
 }

source/sdk/dotnet/model-data/define-object-model.txt

@@ -168,7 +168,10 @@ Default Field Values
 ~~~~~~~~~~~~~~~~~~~~
 
 You can use the built-in language features to assign a default value to a property. 
-In C#, you can assign a default value in the property declaration. 
+In C#, you can assign a default value on primitives in the property declaration. 
+You cannot set a default value on a collection, except to set it to ``null!``. 
+Even if you set a collection to ``null!``, collections are always initialized on 
+first access, so will never be null. 
 
 .. literalinclude:: /examples/generated/dotnet/Objects.snippet.default.cs
    :language: csharp
@@ -303,7 +306,7 @@ following rules:
 - You must declare properties that are Realm object types as nullable.
 
 - You cannot declare collections (list, sets, backlinks, and dictionaries) as 
-  nullable, but their parameters may be:
+  nullable, but their parameters may be nullable according to the following rules:
 
   - For all types of collections, if the parameters are primitives 
     (value- or reference-types), they can be required or nullable.
@@ -334,4 +337,4 @@ in your Realm objects. You can do so by setting ``realm.ignore_objects_nullabili
 in a `global configuration file <https://learn.microsoft.com/en-us/dotnet/fundamentals/code-analysis/configuration-files>`__.
 
 If you enable ``realm.ignore_objects_nullability``, nullability annotations
-will be ignored on Realm object properties, including collections of Realm objects.
+will be ignored on Realm object properties, including collections of Realm objects.