# System.Text.Json

``` diff
 namespace System.Text.Json {
     public sealed class JsonSerializerOptions {
-        public JsonNamingPolicy DictionaryKeyPolicy { get; set; }
+        public JsonNamingPolicy? DictionaryKeyPolicy { get; set; }
-        public JavaScriptEncoder Encoder { get; set; }
+        public JavaScriptEncoder? Encoder { get; set; }
+        public string NewLine { get; set; }
-        public JsonNamingPolicy PropertyNamingPolicy { get; set; }
+        public JsonNamingPolicy? PropertyNamingPolicy { get; set; }
-        public ReferenceHandler ReferenceHandler { get; set; }
+        public ReferenceHandler? ReferenceHandler { get; set; }
-        public IJsonTypeInfoResolver TypeInfoResolver { get; set; }
+        public IJsonTypeInfoResolver? TypeInfoResolver { get; set; }
     }
     public struct JsonWriterOptions {
-        public JavaScriptEncoder Encoder { get; set; }
+        public JavaScriptEncoder? Encoder { get; set; }
+        public string NewLine { get; set; }
     }
 }
```

