Http::FilterMetadataStatus Context::decodeMetadata(Http::MetadataMap& response_metadata) {
  response_metadata_ = &response_metadata;
  auto result = onRequestMetadata();
  response_metadata_ = nullptr;
  return result;
}
Http::FilterMetadataStatus Context::decodeMetadata(Http::MetadataMap& response_metadata) {
  response_metadata_ = &response_metadata;
  auto result = onRequestMetadata();
  response_metadata_ = nullptr;
  return result;
}