System.Text.Json is adding EqualityContract properties metadata for records #77675

public sealed record Test;

[JsonSerializable(typeof(Test))]
public sealed partial class MyTestContext : JsonSerializerContext
{
}

// <auto-generated/>

#nullable enable annotations
#nullable disable warnings

// Suppress warnings about [Obsolete] member usage in generated code.
#pragma warning disable CS0618

namespace MyTestProject
{
    public sealed partial class MyTestContext
    {
        private global::System.Text.Json.Serialization.Metadata.JsonTypeInfo<global::MyTestProject.Test>? _Test;
        /// <summary>
        /// Defines the source generated JSON serialization contract metadata for a given type.
        /// </summary>
        public global::System.Text.Json.Serialization.Metadata.JsonTypeInfo<global::MyTestProject.Test> Test
        {
            get => _Test ??= Create_Test(Options);
        }
        
        // Intentionally not a static method because we create a delegate to it. Invoking delegates to instance
        // methods is almost as fast as virtual calls. Static methods need to go through a shuffle thunk.
        private global::System.Text.Json.Serialization.Metadata.JsonTypeInfo<global::MyTestProject.Test> Create_Test(global::System.Text.Json.JsonSerializerOptions options)
        {
            global::System.Text.Json.Serialization.Metadata.JsonTypeInfo<global::MyTestProject.Test>? jsonTypeInfo = null;
            global::System.Text.Json.Serialization.JsonConverter? customConverter;
            if (options.Converters.Count > 0 && (customConverter = GetRuntimeProvidedCustomConverter(options, typeof(global::MyTestProject.Test))) != null)
            {
                jsonTypeInfo = global::System.Text.Json.Serialization.Metadata.JsonMetadataServices.CreateValueInfo<global::MyTestProject.Test>(options, customConverter);
            }
            else
            {
                global::System.Text.Json.Serialization.Metadata.JsonObjectInfoValues<global::MyTestProject.Test> objectInfo = new global::System.Text.Json.Serialization.Metadata.JsonObjectInfoValues<global::MyTestProject.Test>()
                {
                    ObjectCreator = static () => new global::MyTestProject.Test(),
                    ObjectWithParameterizedConstructorCreator = null,
                    PropertyMetadataInitializer = _ => TestPropInit(options),
                    ConstructorParameterMetadataInitializer = null,
                    NumberHandling = default,
                    SerializeHandler = TestSerializeHandler
                };
        
                jsonTypeInfo = global::System.Text.Json.Serialization.Metadata.JsonMetadataServices.CreateObjectInfo<global::MyTestProject.Test>(options, objectInfo);
            }
        
            return jsonTypeInfo;
        }
        
        private static global::System.Text.Json.Serialization.Metadata.JsonPropertyInfo[] TestPropInit(global::System.Text.Json.JsonSerializerOptions options)
        {
            global::System.Text.Json.Serialization.Metadata.JsonPropertyInfo[] properties = new global::System.Text.Json.Serialization.Metadata.JsonPropertyInfo[1];
        
            global::System.Text.Json.Serialization.Metadata.JsonPropertyInfoValues<global::System.Type> info0 = new global::System.Text.Json.Serialization.Metadata.JsonPropertyInfoValues<global::System.Type>()
            {
                IsProperty = true,
                IsPublic = false,
                IsVirtual = false,
                DeclaringType = typeof(global::MyTestProject.Test),
                Converter = null,
                Getter = null,
                Setter = null,
                IgnoreCondition = null,
                HasJsonInclude = false,
                IsExtensionData = false,
                NumberHandling = default,
                PropertyName = "EqualityContract",
                JsonPropertyName = null
            };
        
            global::System.Text.Json.Serialization.Metadata.JsonPropertyInfo propertyInfo0 = global::System.Text.Json.Serialization.Metadata.JsonMetadataServices.CreatePropertyInfo<global::System.Type>(options, info0);
            properties[0] = propertyInfo0;
        
            return properties;
        }
        
        private void TestSerializeHandler(global::System.Text.Json.Utf8JsonWriter writer, global::MyTestProject.Test? value)
        {
            if (value == null)
            {
                writer.WriteNullValue();
                return;
            }
        
            writer.WriteStartObject();
        
            writer.WriteEndObject();
        }
    }
}