Mediatype nullable

Activout.RestClient.Json/SystemTextJsonDefaults.cs

@@ -15,7 +15,7 @@ public static class SystemTextJsonDefaults
     /// </summary>
     public static readonly MediaType[] MediaTypes =
     [
-        MediaType.ValueOf("application/json")
+        new MediaType("application/json")
     ];
 
     /// <summary>

Activout.RestClient.Newtonsoft.Json/NewtonsoftJsonDefaults.cs

@@ -10,7 +10,7 @@ public static class NewtonsoftJsonDefaults
 {
     public static readonly MediaType[] SupportedMediaTypes =
     [
-        MediaType.ValueOf("application/json")
+        new MediaType("application/json")
     ];
 
     public static readonly JsonConverter[] DefaultJsonConverters =

Activout.RestClient.Xml/XmlHelper.cs

@@ -4,7 +4,7 @@ public static class XmlHelper
 {
     public static readonly MediaType[] SupportedMediaTypes =
     [
-        MediaType.ValueOf("application/xml"),
-        MediaType.ValueOf("text/xml")
+        new MediaType("application/xml"),
+        new MediaType("text/xml")
     ];
 }

Activout.RestClient/Implementation/RequestHandler.cs

@@ -23,7 +23,7 @@ internal class RequestHandler
         private const string DefaultHttpContentType = "application/octet-stream";
 
         // https://tools.ietf.org/html/rfc7578#section-4.4
-        private static readonly MediaType DefaultPartContentType = MediaType.ValueOf("text/plain");
+        private static readonly MediaType DefaultPartContentType = new MediaType("text/plain");
 
         private readonly Type _actualReturnType;
         private readonly int _bodyArgumentIndex = -1;

Activout.RestClient/Implementation/RestClientContext.cs

@@ -17,7 +17,7 @@ internal class RestClientContext
     {
         private static readonly Collection<MediaType> JsonMediaTypeCollection = new Collection<MediaType>
         {
-            MediaType.ValueOf("application/json")
+            new MediaType("application/json")
         };
 
         public RestClientContext()

Activout.RestClient/MediaType.cs

@@ -1,45 +1,28 @@
-#nullable disable
 using System;
 using System.Net.Http.Headers;
 
-namespace Activout.RestClient
+namespace Activout.RestClient;
+
+public record MediaType
 {
-    public sealed class MediaType
+    public static MediaType? ValueOf(string? value)
     {
-        public static MediaType ValueOf(string value)
-        {
-            return value == null ? null : new MediaType(value);
-        }
-
-        public string Value { get; }
-
-        public MediaType(string value)
-        {
-            Value = value ?? throw new ArgumentNullException(nameof(value));
-            if (!MediaTypeHeaderValue.TryParse(Value, out _))
-            {
-                throw new ArgumentException(nameof(value), "Failed to parse MediaType: " + value);
-            }
-        }
-
-        public override string ToString()
-        {
-            return Value;
-        }
+        return value == null ? null : new MediaType(value);
+    }
 
-        private bool Equals(MediaType other)
-        {
-            return Value == other.Value;
-        }
+    public string Value { get; }
 
-        public override bool Equals(object obj)
+    public MediaType(string value)
+    {
+        Value = value;
+        if (!MediaTypeHeaderValue.TryParse(Value, out _))
         {
-            return ReferenceEquals(this, obj) || obj is MediaType other && Equals(other);
+            throw new ArgumentException("Failed to parse MediaType: " + value, nameof(value));
         }
+    }
 
-        public override int GetHashCode()
-        {
-            return (Value != null ? Value.GetHashCode() : 0);
-        }
+    public override string ToString()
+    {
+        return Value;
     }
 }

Activout.RestClient/Serialization/Implementation/ByteArrayDeserializer.cs

@@ -11,7 +11,7 @@ internal class ByteArrayDeserializer : IDeserializer
     {
         public IReadOnlyCollection<MediaType> SupportedMediaTypes => new[]
         {
-            MediaType.ValueOf("application/octet-stream")
+            new MediaType("application/octet-stream")
         };
 
         public int Order { get; set; }

Activout.RestClient/Serialization/Implementation/FormUrlEncodedSerializer.cs

@@ -11,7 +11,7 @@ public class FormUrlEncodedSerializer : ISerializer
     {
         public IReadOnlyCollection<MediaType> SupportedMediaTypes => new[]
         {
-            MediaType.ValueOf("application/x-www-form-urlencoded")
+            new MediaType("application/x-www-form-urlencoded")
         };
 
         public int Order { get; set; }