void SD_workstation_set_data(SD_workstation_t workstation, void *data);
void* SD_workstation_get_data(SD_workstation_t workstation);
const char* SD_workstation_get_name(SD_workstation_t workstation);
-SD_link_t* SD_route_get_list(SD_workstation_t src, SD_workstation_t dst);
+const SD_link_t* SD_route_get_list(SD_workstation_t src, SD_workstation_t dst);
int SD_route_get_size(SD_workstation_t src, SD_workstation_t dst);
double SD_workstation_get_power(SD_workstation_t workstation);
double SD_workstation_get_available_power(SD_workstation_t workstation);