Enable nullable in project but disable in files

Activout.RestClient.Test/Activout.RestClient.Test.csproj

@@ -3,6 +3,7 @@
     <IsPackable>false</IsPackable>
     <TargetFramework>net8.0</TargetFramework>
     <LangVersion>default</LangVersion>
+    <Nullable>enable</Nullable>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     <WarningsNotAsErrors>CS0618;CS0619</WarningsNotAsErrors>
   </PropertyGroup>

Activout.RestClient.Test/BodyArgumentFormPostTest.cs

@@ -1,3 +1,4 @@
+#nullable disable
 using System;
 using System.Collections.Generic;
 using System.Diagnostics.CodeAnalysis;

Activout.RestClient.Test/CancellationTokenBodyTest.cs

@@ -1,3 +1,4 @@
+#nullable disable
 using System;
 using System.Net;
 using System.Net.Http;

Activout.RestClient.Test/DictionaryParameterTests.cs

@@ -1,3 +1,4 @@
+#nullable disable
 using System;
 using System.Collections;
 using System.Collections.Generic;

Activout.RestClient.Test/ErrorResponseTextPlainTest.cs

@@ -1,3 +1,4 @@
+#nullable disable
 using System.Net;
 using System.Net.Http;
 using System.Threading.Tasks;

Activout.RestClient.Test/HttpRequestMessageCollector.cs

@@ -1,3 +1,4 @@
+#nullable disable
 using System.Net.Http;
 
 namespace Activout.RestClient.Test

Activout.RestClient.Test/HttpResponseMessageTest.cs

@@ -1,3 +1,4 @@
+#nullable disable
 using System;
 using System.Net;
 using System.Net.Http;

Activout.RestClient.Test/HttpStatusCodeTest.cs

@@ -1,3 +1,4 @@
+#nullable disable
 using System;
 using System.Net;
 using System.Net.Http;

Activout.RestClient.Test/LoggerFactoryHelpers.cs

@@ -1,3 +1,4 @@
+#nullable disable
 using Microsoft.Extensions.Logging;
 using Xunit.Abstractions;
 

Activout.RestClient.Test/MediaTypeTests.cs

@@ -1,3 +1,4 @@
+#nullable disable
 using System;
 using Xunit;
 

Activout.RestClient.Test/MovieReviews/ErrorResponse.cs

@@ -1,3 +1,4 @@
+#nullable disable
 using System.Collections.Generic;
 
 namespace Activout.RestClient.Test.MovieReviews;

Activout.RestClient.Test/MovieReviews/IMovieReviewService.cs

@@ -1,3 +1,4 @@
+#nullable disable
 using System.Diagnostics.CodeAnalysis;
 using System.Net.Http;
 using System.Threading;

Activout.RestClient.Test/MultipartFormDataContentTest.cs

@@ -1,3 +1,4 @@
+#nullable disable
 using System;
 using System.Linq;
 using System.Net;

Activout.RestClient.Test/NonJsonRestClientTests.cs

@@ -1,3 +1,4 @@
+#nullable disable
 using System;
 using System.Linq;
 using System.Net;

Activout.RestClient.Test/NullParameterTests.cs

@@ -1,3 +1,4 @@
+#nullable disable
 using System.Collections.Generic;
 using System.Net.Http;
 using System.Threading.Tasks;

Activout.RestClient.Test/ParamConverterTests.cs

@@ -1,3 +1,4 @@
+#nullable disable
 using System;
 using System.Reflection;
 using Activout.RestClient.ParamConverter;

Activout.RestClient.Test/RestClientExceptionTest.cs

@@ -1,4 +1,5 @@
-using System;
+#nullable disable
+using System;
 using System.IO;
 using System.Net;
 using System.Runtime.Serialization.Formatters.Binary;