text: #ifndef FIX43_HEARTBEAT_H
  #define FIX43_HEARTBEAT_H
  
  #include "Message.h"
  
  namespace FIX43
  {
  
    class Heartbeat : public Message
    {
    public:
      Heartbeat() : Message(MsgType()) {}
      Heartbeat(const FIX::Message& m) : Message(m) {}
      Heartbeat(const Message& m) : Message(m) {}
      Heartbeat(const Heartbeat& m) : Message(m) {}
      static FIX::MsgType MsgType() { return FIX::MsgType("0"); }
  
      FIELD_SET(*this, FIX::TestReqID);
    };
  
  }
  
  #endif
  