309   for (auto& option : options) {  in OnConfigurationRequest()  local
310     switch (option->type_) {  in OnConfigurationRequest()
312         auto* config = MtuConfigurationOption::Specialize(option.get());  in OnConfigurationRequest()
322         auto* config = FlushTimeoutConfigurationOption::Specialize(option.get());  in OnConfigurationRequest()
327         auto* config = RetransmissionAndFlowControlConfigurationOption::Specialize(option.get());  in OnConfigurationRequest()
347         if (option->is_hint_ != ConfigurationOptionIsHint::OPTION_IS_A_HINT) {  in OnConfigurationRequest()
348 …   LOG_WARN("Received some unsupported configuration option: %d", static_cast<int>(option->type_));  in OnConfigurationRequest()
441   for (auto& option : options) {  in negotiate_configuration()  local
442     switch (option->type_) {  in negotiate_configuration()
458         auto* config = RetransmissionAndFlowControlConfigurationOption::Specialize(option.get());  in negotiate_configuration()
484 …   LOG_WARN("Received some unsupported configuration option: %d", static_cast<int>(option->type_));  in negotiate_configuration()
540   for (auto& option : options) {  in OnConfigurationResponse()  local
541     switch (option->type_) {  in OnConfigurationResponse()
550         auto config = RetransmissionAndFlowControlConfigurationOption::Specialize(option.get());  in OnConfigurationResponse()
561 …     configuration_state.fcs_type_ = FrameCheckSequenceOption::Specialize(option.get())->fcs_type_;  in OnConfigurationResponse()
565 …   LOG_WARN("Received some unsupported configuration option: %d", static_cast<int>(option->type_));  in OnConfigurationResponse()