fil/docs/snippets/swift/plugins/pdf_metadata_extractor.md

import Kreuzberg

// Custom DocumentExtractor registration is not available from Swift.
//
// The FFI defines SwiftDocumentExtractorBox opaque type (packages/swift/rust/src/lib.rs),
// but swift-bridge's Swift code generator does not emit the protocol definition or
// factory required to construct and register instances from Swift.
//
// Workaround: Augment PDF extraction results by implementing a PostProcessor in Rust,
// or post-process ExtractionResult.metadata in Swift after extraction.