void OAuth2Filter::sendUnauthorizedResponse() {
  config_->stats().oauth_failure_.inc();
  decoder_callbacks_->sendLocalReply(Http::Code::Unauthorized, UnauthorizedBodyMessage, nullptr,
                                     absl::nullopt, EMPTY_STRING);
}
void OAuth2Filter::sendUnauthorizedResponse() {
  config_->stats().oauth_failure_.inc();
  decoder_callbacks_->sendLocalReply(Http::Code::Unauthorized, UnauthorizedBodyMessage, nullptr,
                                     absl::nullopt, EMPTY_STRING);
}