import org.opendaylight.controller.sal.core.ComponentActivatorAbstractBase;
import org.opendaylight.controller.sal.reader.IReadService;
import org.opendaylight.controller.statisticsmanager.IStatisticsManager;
-import org.opendaylight.controller.statisticsmanager.StatisticsManager;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;