set WarningsAsErrors = true

Pushbullet/Communication/Pushbullet.cs

@@ -117,12 +117,14 @@ File shrunk in size by: {{ difference | file_size }} / {{ percent }}%
             httpClient.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", settings.ApiToken);
 
             // Create the request content
+#pragma warning disable IL2026
             var content = new StringContent(JsonSerializer.Serialize(
             new {
                 type = "note",
                 title,
                 body 
             }), Encoding.UTF8, "application/json");
+#pragma warning restore IL2026
 
             
             var response = httpClient.PostAsync("https://api.pushbullet.com/v2/pushes", content).Result;

Pushbullet/Pushbullet.csproj

@@ -13,6 +13,7 @@
     <Product>Pushbullet</Product>
     <PackageProjectUrl>https://fileflows.com/</PackageProjectUrl>
     <Description>Lets you send Pushbullet messages to a server</Description>
+    <TreatWarningsAsErrors>True</TreatWarningsAsErrors>
   </PropertyGroup>
   <ItemGroup>
     <None Update="i18n\*.json">

Pushbullet/Tests/PushbulletTests.cs

@@ -11,7 +11,7 @@ public class PushbulletTests
     [TestMethod]
     public void Pushbullet_Basic_Message()
     {
-        var args = new NodeParameters("test.file", new TestLogger(), false, string.Empty, null);
+        var args = new NodeParameters("test.file", new TestLogger(), false, string.Empty, null!);
         args.GetPluginSettingsJson = (string input) =>
         {
             return File.ReadAllText("../../../../../Pushbullet.json");

Pushbullet/Tests/TestLogger.cs

@@ -24,11 +24,13 @@ internal class TestLogger : ILogger
     {
         if (args == null || args.Length == 0)
             return;
+#pragma warning disable IL2026
         string message = type + " -> " +
             string.Join(", ", args.Select(x =>
             x == null ? "null" :
             x.GetType().IsPrimitive || x is string ? x.ToString() :
             System.Text.Json.JsonSerializer.Serialize(x)));
+#pragma warning restore IL2026
         Messages.Add(message);
     }