// Own namespace
namespace Org\Mxchange\City\;
-// Import own stuff
+// Import application-specific stuff
use Org\Mxchange\City\Generic\BaseCitySystem;
/**
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-class Base??? extends BaseCitySystem {
+abstract class Base??? extends BaseCitySystem {
/**
* Protected constructor
*