void ConnectionImpl::ClientStreamImpl::decodeTrailers() {
  response_decoder_.decodeTrailers(
      std::move(absl::get<ResponseTrailerMapPtr>(headers_or_trailers_)));
}
void ConnectionImpl::ClientStreamImpl::decodeTrailers() {
  response_decoder_.decodeTrailers(
      std::move(absl::get<ResponseTrailerMapPtr>(headers_or_trailers_)));
}