public MakeAwareOfHeartbeat(IVhptHeartbeatGenerator generator)
 {
     this.generator = generator;
 }
 public StopHeartbeat(IVhptHeartbeatGenerator generator)
 {
     this.generator = generator;
 }
 public StopHeartbeat(IVhptHeartbeatGenerator generator)
 {
     this.generator = generator;
 }