text: #ifndef HEARTBEAT_H
  #define HEARTBEAT_H
  
  #include "Variants.h"
  
  #include "OcppOperation.h"
  
  class Heartbeat : public OcppOperation {
  private:
    boolean waitForConf = false;
    boolean completed = false;
    boolean reqExecuted = false; // For debugging only: implement dummy server functionalities to test against echo server
  public:
    Heartbeat(WebSocketsClient *webSocket);
  
    /**
     * See OcppOperation.h for more information
     */
    boolean sendReq();
    boolean receiveConf(JsonDocument *json);
  
    /**
     * For debuggin only: implement dummy server functionalities to test against echo server
     */
    boolean receiveReq(JsonDocument *json);
    boolean sendConf();
  };
  
  #endif
  