# System.Text.Json.Serialization.Metadata

``` diff
 namespace System.Text.Json.Serialization.Metadata {
     public sealed class JsonParameterInfoValues {
+        public bool IsNullable { get; set; }
     }
     public abstract class JsonPropertyInfo {
+        public bool IsGetNullable { get; set; }
+        public bool IsSetNullable { get; set; }
     }
 }
```

