Sort out nullable in the last parts of the code

Activout.RestClient.Test/MultipartFormDataContentTest.cs

@@ -82,16 +82,8 @@ await client.SendFormInForm(new FormModel
                 MyString = "foobar"
             }, new[]
             {
-                new Part<string>
-                {
-                    Content = "foo",
-                    FileName = "foo.txt"
-                },
-                new Part<string>
-                {
-                    Content = "bar",
-                    FileName = "bar.txt"
-                }
+                new Part(Content: "foo", FileName: "foo.txt"),
+                new Part(Content: "bar", FileName: "bar.txt")
             });
 
             // Assert

Activout.RestClient/IRestClientFactory.cs

@@ -1,8 +1,6 @@
-#nullable disable
-namespace Activout.RestClient
+namespace Activout.RestClient;
+
+public interface IRestClientFactory
 {
-    public interface IRestClientFactory
-    {
-        IRestClientBuilder CreateBuilder();
-    }
+    IRestClientBuilder CreateBuilder();
 }

Activout.RestClient/Implementation/RequestHandler.cs

@@ -1,7 +1,6 @@
 using System;
 using System.Collections;
 using System.Collections.Generic;
-using System.Linq;
 using System.Net;
 using System.Net.Http;
 using System.Reflection;
@@ -16,6 +15,8 @@
 
 namespace Activout.RestClient.Implementation;
 
+internal record HttpContentPart(HttpContent Content, string Name, string? FileName);
+
 internal class RequestHandler
 {
     // https://www.w3.org/Protocols/rfc2616/rfc2616-sec7.html#sec7.2.1
@@ -210,7 +211,7 @@ private void PrepareRequestMessage(HttpRequestMessage request)
         var routeParams = new Dictionary<string, object>();
         var queryParams = new List<string>();
         var formParams = new List<KeyValuePair<string, string>>();
-        var partParams = new List<Part<HttpContent>>();
+        var partParams = new List<HttpContentPart>();
         var cancellationToken = GetParams(args, routeParams, queryParams, formParams, headers, partParams);
 
         var requestUriString = ExpandTemplate(routeParams);
@@ -251,7 +252,7 @@ private void PrepareRequestMessage(HttpRequestMessage request)
     }
 
     private static MultipartFormDataContent CreateMultipartFormDataContent(
-        IEnumerable<Part<HttpContent>> partParams)
+        IEnumerable<HttpContentPart> partParams)
     {
         var content = new MultipartFormDataContent();
         foreach (var part in partParams)
@@ -293,7 +294,7 @@ private CancellationToken GetParams(
         List<string> queryParams,
         List<KeyValuePair<string, string>> formParams,
         List<KeyValuePair<string, object>> headers,
-        List<Part<HttpContent>> parts)
+        List<HttpContentPart> parts)
     {
         var cancellationToken = CancellationToken.None;
 
@@ -430,7 +431,7 @@ private CancellationToken GetParams(
         return cancellationToken;
     }
 
-    private IEnumerable<Part<HttpContent>> GetPartNameAndHttpContent(PartParamAttribute partAttribute,
+    private IEnumerable<HttpContentPart> GetPartNameAndHttpContent(PartParamAttribute partAttribute,
         string parameterName,
         object? rawValue)
     {
@@ -439,19 +440,17 @@ private IEnumerable<Part<HttpContent>> GetPartNameAndHttpContent(PartParamAttrib
 
         if (rawValue is Part part)
         {
-            rawValue = part.InternalContent;
+            rawValue = part.Content;
             partName = part.Name;
             fileName = part.FileName;
         }
 
-        if (rawValue is { })
+        if (rawValue is not null)
         {
-            yield return new Part<HttpContent>
-            {
-                Content = GetPartHttpContent(partAttribute, rawValue),
-                Name = partName ?? partAttribute.Name ?? parameterName,
-                FileName = fileName ?? partAttribute.FileName
-            };
+            yield return new HttpContentPart(
+                Content: GetPartHttpContent(partAttribute, rawValue),
+                Name: partName ?? partAttribute.Name ?? parameterName,
+                FileName: fileName ?? partAttribute.FileName);
         }
     }
 
@@ -481,7 +480,8 @@ private static HttpContent GetHttpContent(ISerializer serializer, object? value,
     }
 
 
-    private async Task<object?> SendRequestAndHandleResponse(HttpRequestMessage request, CancellationToken cancellationToken)
+    private async Task<object?> SendRequestAndHandleResponse(HttpRequestMessage request,
+        CancellationToken cancellationToken)
     {
         var response = await SendRequest(request, cancellationToken);
         return await HandleResponse(request, response);

Activout.RestClient/Part.cs

@@ -1,19 +1,3 @@
-#nullable disable
-namespace Activout.RestClient
-{
-    public class Part
-    {
-        internal object InternalContent { get; set; }
-        public string Name { get; set; }
-        public string FileName { get; set; }
-    }
+namespace Activout.RestClient;
 
-    public class Part<T> : Part
-    {
-        public T Content
-        {
-            get => (T)InternalContent;
-            set => InternalContent = value;
-        }
-    }
-}
+public record Part(object Content, string? Name = null, string? FileName = null);