+ void set_conector_in(int _in);
+ void set_conector_out(int _out);
+ bool is_occupied_area(int _a, int _b);
+ bool is_other_connection_area(int _a, int _b);
+ virtual void save(FILE *archivo) = 0;
+ virtual bool check_connection()=0;
+ virtual bool is_connection_area(int _a, int _b)=0;