text: #ifndef PROPULSIONMEMENTO_H
  #define PROPULSIONMEMENTO_H
  
  #include <iostream>
  #include "Falcon9Core.h"
  #include "Payload.h"
  
  class PropulsionMemento
  {
      private:
  
          Falcon9Core * core ;
          Payload * payload;
  
      public:
  
          /**
           * @brief Construct a new Propulsion Memento object
           * @author Derived
           * @param core 
           * @param pay 
           */
          PropulsionMemento(Falcon9Core * core, Payload * pay);
  
          /**
           * @brief Get the Core 
           * @author Derived
           * @return Falcon9Core* 
           */
          Falcon9Core * getCore();
  
          /**
           * @brief Get the Payload 
           * @author Derived
           * @return Payload* 
           */
          Payload * getPay();
  
  };
  #endif