Internal change.

PiperOrigin-RevId: 468261275

Author: rwgk

pybind11_protobuf/native_proto_caster.h

@@ -17,6 +17,7 @@
 #include <utility>
 
 #include "google/protobuf/message.h"
+#include "absl/strings/string_view.h"
 #include "pybind11_protobuf/enum_type_caster.h"
 #include "pybind11_protobuf/proto_caster_impl.h"
 
@@ -57,6 +58,13 @@ namespace pybind11_protobuf {
 // is required to be called from a PYBIND11_MODULE definition before use.
 inline void ImportNativeProtoCasters() { InitializePybindProtoCastUtil(); }
 
+inline void AllowUnknownFieldsFor(
+    absl::string_view top_message_descriptor_full_name,
+    absl::string_view unknown_field_parent_message_fqn) {
+  // Preparation for cl/467099971.
+  // TODO(240452999): Submit cl/464678844.
+}
+
 }  // namespace pybind11_protobuf
 namespace pybind11 {
 namespace detail {