Symbol public: class ngeo::Pimpl<class ngeo::SignpostVoiceInfo, class ngeo::internal::SignpostVoiceInfoImpl> & __thiscall ngeo::Pimpl<class ngeo::SignpostVoiceInfo, class ngeo::internal::SignpostVoiceInfoImpl>::operator=(class ngeo::Pimpl<class ngeo::SignpostVoiceInfo, class ngeo::internal::SignpostVoiceInfoImpl> const &)