6#include <unordered_map> 
    8#include <grpcpp/client_context.h> 
   10#include <userver/formats/json_fwd.hpp> 
   12USERVER_NAMESPACE_BEGIN
 
   21  std::optional<std::chrono::milliseconds> timeout;
 
   24Qos Parse(
const formats::
json::Value& value, formats::
parse::
To<Qos>);
 
   26void ApplyQos(grpc::ClientContext& context, 
const Qos& qos,