/************************************************************************* * * This code was developed as part of the MIT SPIN project. (June, 1999) * *************************************************************************/#ifndef energy_resource_h#define energy_resource_h#include <mit/rca/resource.h>class EnergyResource ;class EnergyResource : public Resource { private:  int command(int argc, const char*const* argv);  char *resulttostring(int result);  double energy_level_;  double alarm_level_;  double expended_; public:  EnergyResource();  void add(double amount);  int remove(double amount);  int acquire(double amount);  double query() { return energy_level_;}};#endif