Nomad changes

docs/snippets/csharp/plugins/plugin_testing.md

@@ -0,0 +1,59 @@
+```csharp title="C#"
+using Kreuzberg;
+using Xunit;
+
+public class CustomValidatorTests
+{
+    [Fact]
+    public void TestValidatorRegistration()
+    {
+        var validator = new TestValidator();
+        ValidatorRegistry.Register(validator);
+
+        var validators = KreuzbergLib.ListValidators();
+        Assert.Contains("test-validator", validators);
+    }
+
+    [Fact]
+    public void TestValidatorProcessing()
+    {
+        var result = new ExtractionResult
+        {
+            Content = "Test content with some length",
+            MimeType = "text/plain"
+        };
+
+        var config = new ExtractionConfig();
+        var validator = new TestValidator();
+
+        validator.Initialize();
+        Assert.True(validator.ShouldValidate(result, config));
+        validator.Validate(result, config);
+        validator.Shutdown();
+    }
+}
+
+public class TestValidator : IValidator
+{
+    public string Name => "test-validator";
+    public string Version => "1.0.0";
+
+    public void Initialize() { }
+    public void Shutdown() { }
+
+    public void Validate(ExtractionResult result, ExtractionConfig config)
+    {
+        if (string.IsNullOrEmpty(result.Content))
+        {
+            throw new KreuzbergException("Content cannot be empty", 1000);
+        }
+    }
+
+    public bool ShouldValidate(ExtractionResult result, ExtractionConfig config)
+    {
+        return !string.IsNullOrEmpty(result.Content);
+    }
+
+    public int Priority() => 50;
+}
+```