namespace System.Text.Json.Serialization { [AttributeUsage(AttributeTargets.Class | AttributeTargets.Struct | AttributeTargets.Interface, AllowMultiple = false, Inherited = false)] public class JsonUnmappedMemberHandlingAttribute : JsonAttribute { public JsonUnmappedMemberHandling UnmappedMemberHandling { get; } public JsonUnmappedMemberHandlingAttribute(JsonUnmappedMemberHandling unmappedMemberHandling) { UnmappedMemberHandling = unmappedMemberHandling; } } }