From 7b1f032f90e4c3a0b2fa76c82896074f1aace3e2 Mon Sep 17 00:00:00 2001
From: VisualBean <alekcarlsen@gmail.com>
Date: Tue, 2 Jan 2024 13:37:53 +0100
Subject: [PATCH] dial back support to netstandard2.0

---
 .../BindingsCollection.cs                     | 11 +++++--
 .../LEGO.AsyncAPI.Bindings.csproj             | 23 +++++++-------
 src/LEGO.AsyncAPI.Bindings/Sns/Consumer.cs    |  2 ++
 .../Sns/DeliveryPolicy.cs                     |  2 ++
 src/LEGO.AsyncAPI.Bindings/Sns/Identifier.cs  |  2 ++
 src/LEGO.AsyncAPI.Bindings/Sns/Ordering.cs    |  2 ++
 src/LEGO.AsyncAPI.Bindings/Sns/Policy.cs      |  2 ++
 .../Sns/RedrivePolicy.cs                      |  2 ++
 .../Sns/SnsChannelBinding.cs                  |  2 ++
 .../Sns/SnsOperationBinding.cs                |  2 ++
 src/LEGO.AsyncAPI.Bindings/Sns/Statement.cs   |  2 ++
 src/LEGO.AsyncAPI.Bindings/Sqs/Identifier.cs  |  2 ++
 src/LEGO.AsyncAPI.Bindings/Sqs/Policy.cs      |  2 ++
 src/LEGO.AsyncAPI.Bindings/Sqs/Queue.cs       |  2 ++
 .../Sqs/RedrivePolicy.cs                      |  2 ++
 .../Sqs/SqsChannelBinding.cs                  |  2 ++
 .../Sqs/SqsOperationBinding.cs                |  2 ++
 src/LEGO.AsyncAPI.Bindings/Sqs/Statement.cs   |  2 ++
 .../StringOrStringList.cs                     | 27 +++++++++++------
 .../LEGO.AsyncAPI.Readers.csproj              | 21 ++++++-------
 src/LEGO.AsyncAPI.Readers/YamlConverter.cs    |  4 ++-
 src/LEGO.AsyncAPI/LEGO.AsyncAPI.csproj        | 30 ++++++++++---------
 .../Models/JsonSchema/FalseApiSchema.cs       |  2 ++
 .../Bindings/Sns/SnsBindings_Should.cs        |  2 ++
 .../Bindings/Sqs/SqsBindings_should.cs        |  2 ++
 .../Bindings/StringOrStringList_Should.cs     |  2 ++
 .../LEGO.AsyncAPI.Tests.csproj                | 11 +++----
 27 files changed, 115 insertions(+), 52 deletions(-)

diff --git a/src/LEGO.AsyncAPI.Bindings/BindingsCollection.cs b/src/LEGO.AsyncAPI.Bindings/BindingsCollection.cs
index e52392b6..0d527a89 100644
--- a/src/LEGO.AsyncAPI.Bindings/BindingsCollection.cs
+++ b/src/LEGO.AsyncAPI.Bindings/BindingsCollection.cs
@@ -19,8 +19,15 @@ public static TCollection Add<TCollection, TItem>(
     IEnumerable<TItem> source)
     where TCollection : ICollection<TItem>
         {
-            ArgumentNullException.ThrowIfNull(destination);
-            ArgumentNullException.ThrowIfNull(source);
+            if (destination is null)
+            {
+                throw new ArgumentNullException(nameof(destination));
+            }
+
+            if (source is null)
+            {
+                throw new ArgumentNullException(nameof(source));
+            }
 
             if (destination is List<TItem> list)
             {
diff --git a/src/LEGO.AsyncAPI.Bindings/LEGO.AsyncAPI.Bindings.csproj b/src/LEGO.AsyncAPI.Bindings/LEGO.AsyncAPI.Bindings.csproj
index e05aacab..9ed7650c 100644
--- a/src/LEGO.AsyncAPI.Bindings/LEGO.AsyncAPI.Bindings.csproj
+++ b/src/LEGO.AsyncAPI.Bindings/LEGO.AsyncAPI.Bindings.csproj
@@ -1,20 +1,21 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>netstandard2.0</TargetFramework>
+    <LangVersion>9.0</LangVersion>
     <ImplicitUsings>disable</ImplicitUsings>
-	<Company>The LEGO Group</Company>
-	<PackageProjectUrl>https://github.com/LEGO/AsyncAPI.NET</PackageProjectUrl>
-	<PackageReadmeFile>README.md</PackageReadmeFile>
-	<Description>AsyncAPI.NET Bindings</Description>
-	<PackageTags>asyncapi .net openapi documentation</PackageTags>
-	<PackageId>AsyncAPI.NET.Bindings</PackageId>
-	<AssemblyName>LEGO.AsyncAPI.Bindings</AssemblyName>
-	<RootNamespace>LEGO.AsyncAPI.Bindings</RootNamespace>
-	<RepositoryUrl>https://github.com/LEGO/AsyncAPI.NET</RepositoryUrl>
+    <Company>The LEGO Group</Company>
+    <PackageProjectUrl>https://github.com/LEGO/AsyncAPI.NET</PackageProjectUrl>
+    <PackageReadmeFile>README.md</PackageReadmeFile>
+    <Description>AsyncAPI.NET Bindings</Description>
+    <PackageTags>asyncapi .net openapi documentation</PackageTags>
+    <PackageId>AsyncAPI.NET.Bindings</PackageId>
+    <AssemblyName>LEGO.AsyncAPI.Bindings</AssemblyName>
+    <RootNamespace>LEGO.AsyncAPI.Bindings</RootNamespace>
+    <RepositoryUrl>https://github.com/LEGO/AsyncAPI.NET</RepositoryUrl>
   </PropertyGroup>
 
-	
+    
   <ItemGroup>
     <None Remove="stylecop.json" />
   </ItemGroup>
diff --git a/src/LEGO.AsyncAPI.Bindings/Sns/Consumer.cs b/src/LEGO.AsyncAPI.Bindings/Sns/Consumer.cs
index 262521d0..2e42e6cd 100644
--- a/src/LEGO.AsyncAPI.Bindings/Sns/Consumer.cs
+++ b/src/LEGO.AsyncAPI.Bindings/Sns/Consumer.cs
@@ -1,3 +1,5 @@
+// Copyright (c) The LEGO Group. All rights reserved.
+
 namespace LEGO.AsyncAPI.Bindings.Sns
 {
     using System;
diff --git a/src/LEGO.AsyncAPI.Bindings/Sns/DeliveryPolicy.cs b/src/LEGO.AsyncAPI.Bindings/Sns/DeliveryPolicy.cs
index f9421ca9..9ed78b19 100644
--- a/src/LEGO.AsyncAPI.Bindings/Sns/DeliveryPolicy.cs
+++ b/src/LEGO.AsyncAPI.Bindings/Sns/DeliveryPolicy.cs
@@ -1,3 +1,5 @@
+// Copyright (c) The LEGO Group. All rights reserved.
+
 namespace LEGO.AsyncAPI.Bindings.Sns
 {
     using System;
diff --git a/src/LEGO.AsyncAPI.Bindings/Sns/Identifier.cs b/src/LEGO.AsyncAPI.Bindings/Sns/Identifier.cs
index 0e6466b0..960c1c54 100644
--- a/src/LEGO.AsyncAPI.Bindings/Sns/Identifier.cs
+++ b/src/LEGO.AsyncAPI.Bindings/Sns/Identifier.cs
@@ -1,3 +1,5 @@
+// Copyright (c) The LEGO Group. All rights reserved.
+
 namespace LEGO.AsyncAPI.Bindings.Sns
 {
     using System;
diff --git a/src/LEGO.AsyncAPI.Bindings/Sns/Ordering.cs b/src/LEGO.AsyncAPI.Bindings/Sns/Ordering.cs
index f80c953b..23f69f52 100644
--- a/src/LEGO.AsyncAPI.Bindings/Sns/Ordering.cs
+++ b/src/LEGO.AsyncAPI.Bindings/Sns/Ordering.cs
@@ -1,3 +1,5 @@
+// Copyright (c) The LEGO Group. All rights reserved.
+
 namespace LEGO.AsyncAPI.Bindings.Sns
 {
     using System;
diff --git a/src/LEGO.AsyncAPI.Bindings/Sns/Policy.cs b/src/LEGO.AsyncAPI.Bindings/Sns/Policy.cs
index eefc6171..a4232e5e 100644
--- a/src/LEGO.AsyncAPI.Bindings/Sns/Policy.cs
+++ b/src/LEGO.AsyncAPI.Bindings/Sns/Policy.cs
@@ -1,3 +1,5 @@
+// Copyright (c) The LEGO Group. All rights reserved.
+
 namespace LEGO.AsyncAPI.Bindings.Sns
 {
     using System;
diff --git a/src/LEGO.AsyncAPI.Bindings/Sns/RedrivePolicy.cs b/src/LEGO.AsyncAPI.Bindings/Sns/RedrivePolicy.cs
index 4e5e6340..01e6d7e2 100644
--- a/src/LEGO.AsyncAPI.Bindings/Sns/RedrivePolicy.cs
+++ b/src/LEGO.AsyncAPI.Bindings/Sns/RedrivePolicy.cs
@@ -1,3 +1,5 @@
+// Copyright (c) The LEGO Group. All rights reserved.
+
 namespace LEGO.AsyncAPI.Bindings.Sns
 {
     using System;
diff --git a/src/LEGO.AsyncAPI.Bindings/Sns/SnsChannelBinding.cs b/src/LEGO.AsyncAPI.Bindings/Sns/SnsChannelBinding.cs
index 65043449..13676168 100644
--- a/src/LEGO.AsyncAPI.Bindings/Sns/SnsChannelBinding.cs
+++ b/src/LEGO.AsyncAPI.Bindings/Sns/SnsChannelBinding.cs
@@ -1,3 +1,5 @@
+// Copyright (c) The LEGO Group. All rights reserved.
+
 namespace LEGO.AsyncAPI.Bindings.Sns
 {
     using System;
diff --git a/src/LEGO.AsyncAPI.Bindings/Sns/SnsOperationBinding.cs b/src/LEGO.AsyncAPI.Bindings/Sns/SnsOperationBinding.cs
index ffab9afb..86bf11fd 100644
--- a/src/LEGO.AsyncAPI.Bindings/Sns/SnsOperationBinding.cs
+++ b/src/LEGO.AsyncAPI.Bindings/Sns/SnsOperationBinding.cs
@@ -1,3 +1,5 @@
+// Copyright (c) The LEGO Group. All rights reserved.
+
 namespace LEGO.AsyncAPI.Bindings.Sns
 {
     using System;
diff --git a/src/LEGO.AsyncAPI.Bindings/Sns/Statement.cs b/src/LEGO.AsyncAPI.Bindings/Sns/Statement.cs
index 38e0b1ee..9cfba068 100644
--- a/src/LEGO.AsyncAPI.Bindings/Sns/Statement.cs
+++ b/src/LEGO.AsyncAPI.Bindings/Sns/Statement.cs
@@ -1,3 +1,5 @@
+// Copyright (c) The LEGO Group. All rights reserved.
+
 namespace LEGO.AsyncAPI.Bindings.Sns
 {
     using System;
diff --git a/src/LEGO.AsyncAPI.Bindings/Sqs/Identifier.cs b/src/LEGO.AsyncAPI.Bindings/Sqs/Identifier.cs
index d7d95dcc..6e7aff23 100644
--- a/src/LEGO.AsyncAPI.Bindings/Sqs/Identifier.cs
+++ b/src/LEGO.AsyncAPI.Bindings/Sqs/Identifier.cs
@@ -1,3 +1,5 @@
+// Copyright (c) The LEGO Group. All rights reserved.
+
 namespace LEGO.AsyncAPI.Bindings.Sqs
 {
     using System;
diff --git a/src/LEGO.AsyncAPI.Bindings/Sqs/Policy.cs b/src/LEGO.AsyncAPI.Bindings/Sqs/Policy.cs
index a989c239..2fd9f68b 100644
--- a/src/LEGO.AsyncAPI.Bindings/Sqs/Policy.cs
+++ b/src/LEGO.AsyncAPI.Bindings/Sqs/Policy.cs
@@ -1,3 +1,5 @@
+// Copyright (c) The LEGO Group. All rights reserved.
+
 namespace LEGO.AsyncAPI.Bindings.Sqs
 {
     using System;
diff --git a/src/LEGO.AsyncAPI.Bindings/Sqs/Queue.cs b/src/LEGO.AsyncAPI.Bindings/Sqs/Queue.cs
index 4eec17ef..db3a480a 100644
--- a/src/LEGO.AsyncAPI.Bindings/Sqs/Queue.cs
+++ b/src/LEGO.AsyncAPI.Bindings/Sqs/Queue.cs
@@ -1,3 +1,5 @@
+// Copyright (c) The LEGO Group. All rights reserved.
+
 namespace LEGO.AsyncAPI.Bindings.Sqs
 {
     using System;
diff --git a/src/LEGO.AsyncAPI.Bindings/Sqs/RedrivePolicy.cs b/src/LEGO.AsyncAPI.Bindings/Sqs/RedrivePolicy.cs
index 4222ee45..923d668c 100644
--- a/src/LEGO.AsyncAPI.Bindings/Sqs/RedrivePolicy.cs
+++ b/src/LEGO.AsyncAPI.Bindings/Sqs/RedrivePolicy.cs
@@ -1,3 +1,5 @@
+// Copyright (c) The LEGO Group. All rights reserved.
+
 namespace LEGO.AsyncAPI.Bindings.Sqs
 {
     using System;
diff --git a/src/LEGO.AsyncAPI.Bindings/Sqs/SqsChannelBinding.cs b/src/LEGO.AsyncAPI.Bindings/Sqs/SqsChannelBinding.cs
index b64bed31..6f98da99 100644
--- a/src/LEGO.AsyncAPI.Bindings/Sqs/SqsChannelBinding.cs
+++ b/src/LEGO.AsyncAPI.Bindings/Sqs/SqsChannelBinding.cs
@@ -1,3 +1,5 @@
+// Copyright (c) The LEGO Group. All rights reserved.
+
 namespace LEGO.AsyncAPI.Bindings.Sqs
 {
     using System;
diff --git a/src/LEGO.AsyncAPI.Bindings/Sqs/SqsOperationBinding.cs b/src/LEGO.AsyncAPI.Bindings/Sqs/SqsOperationBinding.cs
index de2372f1..d8eb43dd 100644
--- a/src/LEGO.AsyncAPI.Bindings/Sqs/SqsOperationBinding.cs
+++ b/src/LEGO.AsyncAPI.Bindings/Sqs/SqsOperationBinding.cs
@@ -1,3 +1,5 @@
+// Copyright (c) The LEGO Group. All rights reserved.
+
 namespace LEGO.AsyncAPI.Bindings.Sqs
 {
     using System;
diff --git a/src/LEGO.AsyncAPI.Bindings/Sqs/Statement.cs b/src/LEGO.AsyncAPI.Bindings/Sqs/Statement.cs
index 508e4a33..40590f69 100644
--- a/src/LEGO.AsyncAPI.Bindings/Sqs/Statement.cs
+++ b/src/LEGO.AsyncAPI.Bindings/Sqs/Statement.cs
@@ -1,3 +1,5 @@
+// Copyright (c) The LEGO Group. All rights reserved.
+
 namespace LEGO.AsyncAPI.Bindings.Sqs
 {
     using System;
diff --git a/src/LEGO.AsyncAPI.Bindings/StringOrStringList.cs b/src/LEGO.AsyncAPI.Bindings/StringOrStringList.cs
index c2f323cc..c817e849 100644
--- a/src/LEGO.AsyncAPI.Bindings/StringOrStringList.cs
+++ b/src/LEGO.AsyncAPI.Bindings/StringOrStringList.cs
@@ -14,12 +14,21 @@ public class StringOrStringList : IAsyncApiElement
     {
         public StringOrStringList(AsyncApiAny value)
         {
-            this.Value = value.GetNode() switch
+            switch (value.GetNode())
             {
-                JsonArray array => IsValidStringList(array) ? new AsyncApiAny(array) : throw new ArgumentException($"{nameof(StringOrStringList)} value should only contain string items."),
-                JsonValue jValue => IsString(jValue) ? new AsyncApiAny(jValue) : throw new ArgumentException($"{nameof(StringOrStringList)} should be a string value or a string list."),
-                _ => throw new ArgumentException($"{nameof(StringOrStringList)} should be a string value or a string list.")
-            };
+                case JsonArray array:
+                    this.Value = IsValidStringList(array)
+                        ? new AsyncApiAny(array)
+                        : throw new ArgumentException($"{nameof(StringOrStringList)} value should only contain string items.");
+                    break;
+                case JsonValue jValue:
+                    this.Value = IsString(jValue)
+                        ? new AsyncApiAny(jValue)
+                        : throw new ArgumentException($"{nameof(StringOrStringList)} should be a string value or a string list.");
+                    break;
+                default:
+                    throw new ArgumentException($"{nameof(StringOrStringList)} should be a string value or a string list.");
+            }
         }
 
         public AsyncApiAny Value { get; }
@@ -28,12 +37,12 @@ public static StringOrStringList Parse(ParseNode node)
         {
             switch (node)
             {
-                case ValueNode:
-                    return new StringOrStringList(new AsyncApiAny(node.GetScalarValue()));
-                case ListNode:
+                case ValueNode vn:
+                    return new StringOrStringList(new AsyncApiAny(vn.GetScalarValue()));
+                case ListNode ln:
                 {
                     var jsonArray = new JsonArray();
-                    foreach (var item in node as ListNode)
+                    foreach (var item in ln)
                     {
                         jsonArray.Add(item.GetScalarValue());
                     }
diff --git a/src/LEGO.AsyncAPI.Readers/LEGO.AsyncAPI.Readers.csproj b/src/LEGO.AsyncAPI.Readers/LEGO.AsyncAPI.Readers.csproj
index 6fd9d2e7..3a76f8dd 100644
--- a/src/LEGO.AsyncAPI.Readers/LEGO.AsyncAPI.Readers.csproj
+++ b/src/LEGO.AsyncAPI.Readers/LEGO.AsyncAPI.Readers.csproj
@@ -1,18 +1,19 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>netstandard2.0</TargetFramework>
+    <LangVersion>9.0</LangVersion>
     <ImplicitUsings>disable</ImplicitUsings>
     <Nullable>disable</Nullable>
-	<Company>The LEGO Group</Company>
-	<PackageProjectUrl>https://github.com/LEGO/AsyncAPI.NET</PackageProjectUrl>
-	<PackageReadmeFile>README.md</PackageReadmeFile>
-	<Description>AsyncAPI.NET Readers for JSON and YAML documents</Description>
-	<PackageTags>asyncapi .net openapi documentation</PackageTags>
-	<PackageId>AsyncAPI.NET.Readers</PackageId>
-	<AssemblyName>LEGO.AsyncAPI.Readers</AssemblyName>
-	<RootNamespace>LEGO.AsyncAPI.Readers</RootNamespace>
-	<RepositoryUrl>https://github.com/LEGO/AsyncAPI.NET</RepositoryUrl>
+    <Company>The LEGO Group</Company>
+    <PackageProjectUrl>https://github.com/LEGO/AsyncAPI.NET</PackageProjectUrl>
+    <PackageReadmeFile>README.md</PackageReadmeFile>
+    <Description>AsyncAPI.NET Readers for JSON and YAML documents</Description>
+    <PackageTags>asyncapi .net openapi documentation</PackageTags>
+    <PackageId>AsyncAPI.NET.Readers</PackageId>
+    <AssemblyName>LEGO.AsyncAPI.Readers</AssemblyName>
+    <RootNamespace>LEGO.AsyncAPI.Readers</RootNamespace>
+    <RepositoryUrl>https://github.com/LEGO/AsyncAPI.NET</RepositoryUrl>
   </PropertyGroup>	
 
   <ItemGroup>
diff --git a/src/LEGO.AsyncAPI.Readers/YamlConverter.cs b/src/LEGO.AsyncAPI.Readers/YamlConverter.cs
index e3dfcd43..7ff742e9 100644
--- a/src/LEGO.AsyncAPI.Readers/YamlConverter.cs
+++ b/src/LEGO.AsyncAPI.Readers/YamlConverter.cs
@@ -1,4 +1,6 @@
-namespace LEGO.AsyncAPI.Readers
+// Copyright (c) The LEGO Group. All rights reserved.
+
+namespace LEGO.AsyncAPI.Readers
 {
     using System;
     using System.Globalization;
diff --git a/src/LEGO.AsyncAPI/LEGO.AsyncAPI.csproj b/src/LEGO.AsyncAPI/LEGO.AsyncAPI.csproj
index 8d4b9501..32ec7e46 100644
--- a/src/LEGO.AsyncAPI/LEGO.AsyncAPI.csproj
+++ b/src/LEGO.AsyncAPI/LEGO.AsyncAPI.csproj
@@ -1,17 +1,18 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>netstandard2.0</TargetFramework>
+    <LangVersion>9.0</LangVersion>
     <ImplicitUsings>disable</ImplicitUsings>
-	<Company>The LEGO Group</Company>
-	<PackageProjectUrl>https://github.com/LEGO/AsyncAPI.NET</PackageProjectUrl>
-	<PackageReadmeFile>README.md</PackageReadmeFile>
-	<Description>AsyncAPI.NET models</Description>
-	<PackageTags>asyncapi .net openapi documentation</PackageTags>
-	<PackageId>AsyncAPI.NET</PackageId>
-	<AssemblyName>LEGO.AsyncAPI</AssemblyName>
-	<RootNamespace>LEGO.AsyncAPI</RootNamespace>
-	<RepositoryUrl>https://github.com/LEGO/AsyncAPI.NET</RepositoryUrl>
+    <Company>The LEGO Group</Company>
+    <PackageProjectUrl>https://github.com/LEGO/AsyncAPI.NET</PackageProjectUrl>
+    <PackageReadmeFile>README.md</PackageReadmeFile>
+    <Description>AsyncAPI.NET models</Description>
+    <PackageTags>asyncapi .net openapi documentation</PackageTags>
+    <PackageId>AsyncAPI.NET</PackageId>
+    <AssemblyName>LEGO.AsyncAPI</AssemblyName>
+    <RootNamespace>LEGO.AsyncAPI</RootNamespace>
+    <RepositoryUrl>https://github.com/LEGO/AsyncAPI.NET</RepositoryUrl>
   </PropertyGroup>
 
   <ItemGroup>
@@ -27,12 +28,13 @@
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
+    <PackageReference Include="System.Text.Json" Version="8.0.0" />
 
-	  <AssemblyAttribute Include="System.Runtime.CompilerServices.InternalsVisibleTo">
-		  <_Parameter1>$(MSBuildProjectName).Tests</_Parameter1>
-	  </AssemblyAttribute>
+      <AssemblyAttribute Include="System.Runtime.CompilerServices.InternalsVisibleTo">
+          <_Parameter1>$(MSBuildProjectName).Tests</_Parameter1>
+      </AssemblyAttribute>
   </ItemGroup>
-	
+    
   <ItemGroup>
     <None Include="..\..\README.md">
         <Pack>True</Pack>
diff --git a/src/LEGO.AsyncAPI/Models/JsonSchema/FalseApiSchema.cs b/src/LEGO.AsyncAPI/Models/JsonSchema/FalseApiSchema.cs
index 40746fb3..01f313e5 100644
--- a/src/LEGO.AsyncAPI/Models/JsonSchema/FalseApiSchema.cs
+++ b/src/LEGO.AsyncAPI/Models/JsonSchema/FalseApiSchema.cs
@@ -1,3 +1,5 @@
+// Copyright (c) The LEGO Group. All rights reserved.
+
 namespace LEGO.AsyncAPI.Models
 {
     /// <summary>
diff --git a/test/LEGO.AsyncAPI.Tests/Bindings/Sns/SnsBindings_Should.cs b/test/LEGO.AsyncAPI.Tests/Bindings/Sns/SnsBindings_Should.cs
index d4d5cf05..9e79c07d 100644
--- a/test/LEGO.AsyncAPI.Tests/Bindings/Sns/SnsBindings_Should.cs
+++ b/test/LEGO.AsyncAPI.Tests/Bindings/Sns/SnsBindings_Should.cs
@@ -1,3 +1,5 @@
+// Copyright (c) The LEGO Group. All rights reserved.
+
 namespace LEGO.AsyncAPI.Tests.Bindings.Sns
 {
     using System.Collections.Generic;
diff --git a/test/LEGO.AsyncAPI.Tests/Bindings/Sqs/SqsBindings_should.cs b/test/LEGO.AsyncAPI.Tests/Bindings/Sqs/SqsBindings_should.cs
index d72177ce..6515e459 100644
--- a/test/LEGO.AsyncAPI.Tests/Bindings/Sqs/SqsBindings_should.cs
+++ b/test/LEGO.AsyncAPI.Tests/Bindings/Sqs/SqsBindings_should.cs
@@ -1,3 +1,5 @@
+// Copyright (c) The LEGO Group. All rights reserved.
+
 namespace LEGO.AsyncAPI.Tests.Bindings.Sqs
 {
     using System.Collections.Generic;
diff --git a/test/LEGO.AsyncAPI.Tests/Bindings/StringOrStringList_Should.cs b/test/LEGO.AsyncAPI.Tests/Bindings/StringOrStringList_Should.cs
index 5e2780e7..df162b04 100644
--- a/test/LEGO.AsyncAPI.Tests/Bindings/StringOrStringList_Should.cs
+++ b/test/LEGO.AsyncAPI.Tests/Bindings/StringOrStringList_Should.cs
@@ -1,3 +1,5 @@
+// Copyright (c) The LEGO Group. All rights reserved.
+
 namespace LEGO.AsyncAPI.Tests.Bindings
 {
     using System;
diff --git a/test/LEGO.AsyncAPI.Tests/LEGO.AsyncAPI.Tests.csproj b/test/LEGO.AsyncAPI.Tests/LEGO.AsyncAPI.Tests.csproj
index 692c8e06..6bba6cbc 100644
--- a/test/LEGO.AsyncAPI.Tests/LEGO.AsyncAPI.Tests.csproj
+++ b/test/LEGO.AsyncAPI.Tests/LEGO.AsyncAPI.Tests.csproj
@@ -1,17 +1,18 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFramework>net6.0</TargetFramework>
-		<ImplicitUsings>disable</ImplicitUsings>
+        <TargetFramework>netstandard2.0</TargetFramework>
+		<LangVersion>9.0</LangVersion>
+        <ImplicitUsings>disable</ImplicitUsings>
         <Nullable>enable</Nullable>
 
         <IsPackable>false</IsPackable>
     </PropertyGroup>
 
     <ItemGroup>
-		<PackageReference Include="FluentAssertions" Version="6.7.0" />
-		<PackageReference Include="LiquidTestReports.Markdown" Version="1.0.9" />
-		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.11.0" />
+        <PackageReference Include="FluentAssertions" Version="6.7.0" />
+        <PackageReference Include="LiquidTestReports.Markdown" Version="1.0.9" />
+        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.11.0" />
         <PackageReference Include="JsonSchema.Net" Version="2.0.1" />
         <PackageReference Include="NUnit" Version="3.13.2" />
         <PackageReference Include="NUnit3TestAdapter" Version="4.0.0" />