should be it

external/duckdb/extension/parquet/include/parquet_metadata.hpp

@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//                         DuckDB
+//
+// parquet_metadata.hpp
+//
+//
+//===----------------------------------------------------------------------===//
+
+#pragma once
+
+#include "parquet_reader.hpp"
+#include "duckdb/function/function_set.hpp"
+
+namespace duckdb {
+
+class ParquetMetaDataFunction : public TableFunction {
+public:
+	ParquetMetaDataFunction();
+};
+
+class ParquetSchemaFunction : public TableFunction {
+public:
+	ParquetSchemaFunction();
+};
+
+class ParquetKeyValueMetadataFunction : public TableFunction {
+public:
+	ParquetKeyValueMetadataFunction();
+};
+
+class ParquetFileMetadataFunction : public TableFunction {
+public:
+	ParquetFileMetadataFunction();
+};
+
+class ParquetBloomProbeFunction : public TableFunction {
+public:
+	ParquetBloomProbeFunction();
+};
+
+} // namespace duckdb