```markdown title="Markdown" !!! note "Not Supported" The Go binding is a thin CGO wrapper and does not currently support custom document extractors. Custom plugins must be implemented in Rust. See the [Rust plugin documentation](../../rust/plugins/plugin_extractor.md) for details on creating custom document extractors. Go currently supports: - **PostProcessor** - Transform extraction results - **Validator** - Validate extraction results - **OcrBackend** - Custom OCR implementations ```