Method operator()

libs/coding/serdes_binary_header.hpp:30–30

  HeaderSerVisitor(Sink & sink) : m_sink(sink) {}

  void operator()(uint64_t v, char const * /* name */ = nullptr) { WriteToSink(m_sink, v); }

  template <typename R>
  void operator()(R & r, char const * /* name */ = nullptr)