# System.Text.Json.Serialization.Metadata

``` diff
 namespace System.Text.Json.Serialization.Metadata {
     public static class JsonMetadataServices {
+        public static JsonConverter<Half> HalfConverter { get; }
+        public static JsonConverter<Int128> Int128Converter { get; }
+        public static JsonConverter<Memory<byte>> MemoryByteConverter { get; }
+        public static JsonConverter<ReadOnlyMemory<byte>> ReadOnlyMemoryByteConverter { get; }
+        public static JsonConverter<UInt128> UInt128Converter { get; }
+        public static JsonTypeInfo<Memory<TElement>> CreateMemoryInfo<TElement>(JsonSerializerOptions options, JsonCollectionInfoValues<Memory<TElement>> collectionInfo);
+        public static JsonTypeInfo<ReadOnlyMemory<TElement>> CreateReadOnlyMemoryInfo<TElement>(JsonSerializerOptions options, JsonCollectionInfoValues<ReadOnlyMemory<TElement>> collectionInfo);
     }
     public static class JsonTypeInfoResolver {
+        public static IJsonTypeInfoResolver WithAddedModifier(this IJsonTypeInfoResolver resolver, Action<JsonTypeInfo> modifier);
     }
 }
```

