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docs/snippets/csharp/pdf_only_processor.md

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+```csharp title="C#"
+using Kreuzberg;
+
+public class PdfOnlyProcessor : IPostProcessor
+{
+    public string Name() => "pdf-only-processor";
+    public string Version() => "1.0.0";
+
+    public ExtractionResult Process(ExtractionResult result) => result;
+
+    public bool ShouldProcess(ExtractionResult result)
+        => result.MimeType == "application/pdf";
+}
+
+class Program
+{
+    static void Main()
+    {
+        var processor = new PdfOnlyProcessor();
+        KreuzbergLib.RegisterPostProcessor(processor);
+    }
+}
+```